Toplam 1066 içerik listeleniyor
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Fifty-four mouse testis-enriched genes are not needed for male fertility
Infertility affects about 15 percent of couples around the world. A couple's fertility depends on both the female's and male's ability to reproduce, which relies on thousands of genes working properly.
https://www.biyologlar.com/fifty-four-mouse-testis-enriched-genes-are-not-needed-for-male-fertility -
The 'intraterrestrials': New viruses discovered in ocean depths
The intraterrestrials, they might be called. Strange creatures live in the deep sea, but few are odder than the viruses that inhabit deep ocean methane seeps and prey on single-celled microorganisms called archaea. The least understood of life's three primary domains, archaea thrive in the most extreme environments on the planet: near hot ocean rift vents, in acid mine drainage, in the saltiest of evaporation ponds and in petroleum deposits deep underground. Virus in the deep blue sea While...
https://www.biyologlar.com/the-intraterrestrials-new-viruses-discovered-in-ocean-depths -
Biologists find genetic mechanism for 'extremophile' fish survival
A Washington State University biologist has found the genetic mechanisms that lets a fish live in toxic, acidic water. The discovery opens the door to new insights into the functioning of other "extremophiles" and how they adapt to their challenging environments. "These fish are very extreme," said Joanna Kelley, a genome scientist in the School of Biological Sciences at Washington State University. "Ordinary fish, when you put them in that water, are belly up in about a minute." Kelley and...
https://www.biyologlar.com/biologists-find-genetic-mechanism-for-extremophile-fish-survival -
The importance of keeping silent...in breast cancer cells
Immunofluorescent breast cancer cells used in this study.
https://www.biyologlar.com/the-importance-of-keeping-silent-in-breast-cancer-cells -
The importance of keeping silent...in breast cancer cells
Immunofluorescent breast cancer cells used in this study.
https://www.biyologlar.com/the-importance-of-keeping-silent-in-breast-cancer-cells -
Shape-shifting molecule tricks viruses into mutating themselves to death
A newly developed spectroscopy method is helping to clarify the poorly understood molecular process by which an anti-HIV drug induces lethal mutations in the virus's genetic material. The findings from the University of Chicago and the Massachusetts Institute of Technology could bolster efforts to develop the next generation of anti-viral treatments. Viruses can mutate rapidly in order to adapt to environmental pressure. This feature also helps them become resistant to anti-viral drugs. But...
https://www.biyologlar.com/shape-shifting-molecule-tricks-viruses-into-mutating-themselves-to-death -
DNA breaks in nerve cells' ancestors cluster in specific genes
The genome of developing brain cells harbors 27 clusters or hotspots where its DNA is much more likely to break in some places than others, researchers from the Program in Cellular and Molecular Medicine (PCMM) at Boston Children's Hospital, Harvard Medical School, and the Howard Hughes Medical Institute report in the journal Cell. Those hotspots appear in genes associated with brain tumors and a number of neurodevelopmental and neuropsychiatric conditions, raising new questions about these...
https://www.biyologlar.com/dna-breaks-in-nerve-cells-ancestors-cluster-in-specific-genes -
DNA breaks in nerve cells' ancestors cluster in specific genes
The genome of developing brain cells harbors 27 clusters or hotspots where its DNA is much more likely to break in some places than others, researchers from the Program in Cellular and Molecular Medicine (PCMM) at Boston Children's Hospital, Harvard Medical School, and the Howard Hughes Medical Institute report in the journal Cell. Those hotspots appear in genes associated with brain tumors and a number of neurodevelopmental and neuropsychiatric conditions, raising new questions about these...
https://www.biyologlar.com/dna-breaks-in-nerve-cells-ancestors-cluster-in-specific-genes -
Powering the Cell: Mitochondria
Together Harvard University and XVIVO developed this 3D animation journey for Harvard's undergraduate Molecular and Cellular Biology students about the microscopic world of mitochondria. The animation highlights the creation of Adenosine Triphosphate (ATP) -- mobile molecules which store chemical energy derived from the breakdown of carbon-based food. ATP molecules act as a kind of currency, imparting chemical energy to power all the functional components of cellular activity. This piece...
https://www.biyologlar.com/powering-the-cell-mitochondria -
Open chromatin profiling key to identifying leukemia cells of origin
Every cancer starts with a single cell, and Jackson Laboratory (JAX) researchers have found a precise and reliable way -- whole-genome profiling of open chromatin -- to identify the kind of cell that leads to a given case of leukemia, a valuable key to cancer prognosis and outcome. "Knowing the cell of origin of cancer cells can provide insight into tumor subtypes and possibly diagnostic and therapeutic benefit," says JAX Assistant Professor Jennifer Trowbridge, Ph.D., the lead author of the...
https://www.biyologlar.com/open-chromatin-profiling-key-to-identifying-leukemia-cells-of-origin -
mikrobiyoloji ödevi
Mikrobiyoloji lab.da ekim yapılmadan önce hangi hazırlıklar yapılır. ekim nasıl yapılır. etken teshisi nasıl yapılır. antibiyogram nasıl yapılır... -MİKROORGANİZMALARIN EKİM YÖNTEMLERİ Bu deneyde saf kültür elde etmek amaçlanmıştır.Dökme plak yöntemi,yayma plak yöntemi ve sürme ekim yöntemleriyle izolasyon sağlanır.Plate Count Agar ve Malt Extract Agar besiyerlerine yayma plak yöntemi kullanılarak kıyma örneğinin uygun dilüsyonları ekilecektir.Violet...
https://www.biyologlar.com/mikrobiyoloji-odevi -
Phages transducing antibiotic resistance detected in chicken meat
Bacteria resistant to antibiotics are on the rise. There are different explanations for how resistances are transferred. Researchers from the Vetmeduni Vienna found phages in chicken meat that are able to transfer antimicrobial resistance to bacteria. Phages are viruses that exclusively infect bacteria. They can contribute to the spread of antimicrobial resistance. The findings may also be relevant for clinical settings. The study was published in the journal Applied and Environmental...
https://www.biyologlar.com/phages-transducing-antibiotic-resistance-detected-in-chicken-meat -
Fossil find reveals just how big carnivorous dinosaur may have grown
An unidentified fossilised bone in a museum has revealed the size of a fearsome abelisaur and may have solved a hundred-year old puzzle. Alessandro Chiarenza, a PhD student from Imperial College London, last year stumbled across a fossilised femur bone, left forgotten in a drawer, during his visit to the Museum of Geology and Palaeontology in Palermo Italy. He and a colleague Andrea Cau, a researcher from the University of Bologna, got permission from the museum to analyse the femur. They...
https://www.biyologlar.com/fossil-find-reveals-just-how-big-carnivorous-dinosaur-may-have-grown -
Viruses revealed to be a major driver of human evolution
Aminopeptidase N is a protein that acts as a receptor for coronaviruses, the family of viruses behind recent epidemics of SARS and MERS, among others.
https://www.biyologlar.com/viruses-revealed-to-be-a-major-driver-of-human-evolution -
Viruses revealed to be a major driver of human evolution
Aminopeptidase N is a protein that acts as a receptor for coronaviruses, the family of viruses behind recent epidemics of SARS and MERS, among others.
https://www.biyologlar.com/viruses-revealed-to-be-a-major-driver-of-human-evolution -
Ancient algae found deep in tropical glacier
The remains of tiny creatures found deep inside a mountaintop glacier in Peru are clues to the local landscape more than a millennium ago, according to a new study by Rice University, the University of Nebraska-Lincoln and Ohio State University. The unexpected discovery of diatoms, a type of algae, in ice cores pulled from the Quelccaya Summit Dome Glacier demonstrate that freshwater lakes or wetlands that currently exist at high elevations on or near the mountain were also there in earlier...
https://www.biyologlar.com/ancient-algae-found-deep-in-tropical-glacier -
Ant antennae provide vital ID information: Study
University of Melbourne scientists have shone a new light into the complexities of ant communication, with the discovery that ants not only pick up information through their antennae, but also use them to convey social signals. It is believed to be the first time antennae have been found to be a two-way communication device, rather than just a receptor. Biologists from the University's School of BioSciences analysed the behaviour and surface chemistry of hundreds of ants to examine how they...
https://www.biyologlar.com/ant-antennae-provide-vital-id-information-study -
Cell death: How a protein drives immune cells to suicide
The best hiding place often lies behind enemy lines, as many bacteria such as the pathogens responsible for tuberculosis or typhoid have realized. They invade immune cells and can survive there, well hidden, for some time. To eliminate such invaders, the host macrophages can initiate a suicide program. Together with researchers at the Novartis Institute for Biomedical Research and ETH Zurich, the team led by Prof. Sebastian Hiller from the Biozentrum at the University of Basel has shown for the...
https://www.biyologlar.com/cell-death-how-a-protein-drives-immune-cells-to-suicide -
Cell death: How a protein drives immune cells to suicide
The best hiding place often lies behind enemy lines, as many bacteria such as the pathogens responsible for tuberculosis or typhoid have realized. They invade immune cells and can survive there, well hidden, for some time. To eliminate such invaders, the host macrophages can initiate a suicide program. Together with researchers at the Novartis Institute for Biomedical Research and ETH Zurich, the team led by Prof. Sebastian Hiller from the Biozentrum at the University of Basel has shown for the...
https://www.biyologlar.com/cell-death-how-a-protein-drives-immune-cells-to-suicide -
Culture Media & Equipment
Microbiology culture media, aseptic technique, equipment, and pipettes
https://www.biyologlar.com/culture-media-equipment -
Researchers discover two new groups of viruses
Researchers at the University of Bonn and the German Center for Infection Research (DZIF) have discovered two new groups of viruses within the Bunyavirus family in the tropical forest of Ivory Coast. Previously only five groups responsible for serious illnesses in humans and animals were known. Most are spread through blood-feeding insects. Based on the discovered viruses researchers conclude that the ancester to all bunyaviruses must have existed in arthropods such as insects. The results are...
https://www.biyologlar.com/researchers-discover-two-new-groups-of-viruses -
Research reveals trend in bird-shape evolution on islands
In groundbreaking new work, Natalie Wright, a postdoctoral fellow at the University of Montana, has discovered a predictable trend in the evolution of bird shape.
https://www.biyologlar.com/research-reveals-trend-in-bird-shape-evolution-on-islands -
UMD researchers discover a way that animals keep their cells identical
Roundworms (Caenorhabditis elegans) with a disabled eri-1 gene can lose their ability to control repetitive DNA. In the absence of eri-1, even two age-matched siblings can look dramatically different. Cancers arise in skin, muscle, liver or other types of tissue when one cell becomes different from its neighbors. Although biologists have learned a lot about how tissues form during development, very little is known about how two cells of the same tissue stay identical for an animal's entire...
https://www.biyologlar.com/umd-researchers-discover-a-way-that-animals-keep-their-cells-identical -
UMD researchers discover a way that animals keep their cells identical
Roundworms (Caenorhabditis elegans) with a disabled eri-1 gene can lose their ability to control repetitive DNA. In the absence of eri-1, even two age-matched siblings can look dramatically different. Cancers arise in skin, muscle, liver or other types of tissue when one cell becomes different from its neighbors. Although biologists have learned a lot about how tissues form during development, very little is known about how two cells of the same tissue stay identical for an animal's entire...
https://www.biyologlar.com/umd-researchers-discover-a-way-that-animals-keep-their-cells-identical -
Tracking the viral parasites cruising our waterways
Humans aren't the only ones who like to cruise along the waterways, so do viruses. For the first time, a map of fecal viruses traveling our global waterways has been created using modeling methods to aid in assessing water quality worldwide. "Many countries are at risk of serious public health hazards due to lack of basic sanitation," said Joan Rose, Homer Nowlin Chair in water research at Michigan State University. "With this map, however, we can assess where viruses are being discharged from...
https://www.biyologlar.com/tracking-the-viral-parasites-cruising-our-waterways -
Coral 'toolkit' allows floating larvae to transform into reef skeletons
In a study published today, researchers from the University of Hawai'i at Mānoa (UHM), Rutgers University,
https://www.biyologlar.com/coral-toolkit-allows-floating-larvae-to-transform-into-reef-skeletons -
TSRI researchers find 'lead actors' in immune cell development
Authors of the new paper include (left to right) Changchun Xiao, David Nemazee, Alicia Gonzalez Martin and Maoyi Lai of The Scripps Research Institute
https://www.biyologlar.com/tsri-researchers-find-lead-actors-in-immune-cell-development -
NIH-funded study establishes genomic data set on Lassa virus
An international team of researchers has developed the largest genomic data set in the world on Lassa virus (LASV). The new genomic catalog contains nearly 200 viral genomes collected from patient samples in Sierra Leone and Nigeria, as well as field samples from the major animal reservoir, or host, of Lassa virus--the rodent Mastomys natalensis, also called the multimammate rat. The researchers show that LASV strains cluster into four major groups based on geographic location, with three in...
https://www.biyologlar.com/nih-funded-study-establishes-genomic-data-set-on-lassa-virus -
Bearded dragons show REM and slow wave sleep
Behavioural sleep is ubiquitous among animals, from insects to man. In humans, sleep is also characterized by brain activity:
https://www.biyologlar.com/bearded-dragons-show-rem-and-slow-wave-sleep -
Bearded dragons show REM and slow wave sleep
Behavioural sleep is ubiquitous among animals, from insects to man. In humans, sleep is also characterized by brain activity:
https://www.biyologlar.com/bearded-dragons-show-rem-and-slow-wave-sleep -
Researchers find how proteins control gene expression by binding both DNA and RNA
Proteins that bind DNA or RNA are usually put in different categories, but researchers at Umeå University in Sweden and Inserm in France recently showed how the p53 protein has the capacity to bind both and how this controls gene expression on the levels of both transcription (RNA synthesis) and mRNA translation (protein synthesis). The discovery was presented in the July issue of the journal Oncogene. The p53 tumour suppressor protein is best known for its capacity to bind DNA and control...
https://www.biyologlar.com/researchers-find-how-proteins-control-gene-expression-by-binding-both-dna-and-rna -
Hepatitis A-like virus identified in seals
Scientists in the Center for Infection and Immunity at Columbia University's Mailman School of Public Health have discovered a new virus in seals that is the closest known relative of the human hepatitis A virus. The finding provides new clues on the emergence of hepatitis A. The research appears in the July/August issue of mBio, the online open-access journal of the American Society for Microbiology. "Until now, we didn't know that hepatitis A had any close relatives, and we thought that only...
https://www.biyologlar.com/hepatitis-a-like-virus-identified-in-seals -
The first long-horned beetle giving birth to live young discovered in Borneo
A remarkably high diversity of the wingless long-horned beetles in the mountains of northern Borneo is reported by three Czech researchers from the Palacký University, Olomouc, Czech Republic. Apart from the genera and species new to science, the entomologists report the first case of reproduction by live birth in this rarely collected group of beetles. Generally, insects are oviparous, which means that their females lay eggs and the embryonic development occurs outside the female's body. On...
https://www.biyologlar.com/the-first-long-horned-beetle-giving-birth-to-live-young-discovered-in-borneo -
The first long-horned beetle giving birth to live young discovered in Borneo
A remarkably high diversity of the wingless long-horned beetles in the mountains of northern Borneo is reported by three Czech researchers from the Palacký University, Olomouc, Czech Republic. Apart from the genera and species new to science, the entomologists report the first case of reproduction by live birth in this rarely collected group of beetles. Generally, insects are oviparous, which means that their females lay eggs and the embryonic development occurs outside the female's body. On...
https://www.biyologlar.com/the-first-long-horned-beetle-giving-birth-to-live-young-discovered-in-borneo -
Scientific serendipity yields new neuron type in mouse retina
3-D reconstruction of a GluMI cell at the ultrastructural level showing its input (magenta puncta) and output (yellow puncta) obtained using serial block face scanning electron microscopy
https://www.biyologlar.com/scientific-serendipity-yields-new-neuron-type-in-mouse-retina -
Scientific serendipity yields new neuron type in mouse retina
3-D reconstruction of a GluMI cell at the ultrastructural level showing its input (magenta puncta) and output (yellow puncta) obtained using serial block face scanning electron microscopy
https://www.biyologlar.com/scientific-serendipity-yields-new-neuron-type-in-mouse-retina -
New fungi behind emerging wheat disease
Researchers have unraveled the mystery cause of the emerging wheat disease White Grain Disorder. Scientists at the Wheat Biosecurity Laboratory at The Australian National University (ANU) identified the cause of the disease when they isolated three previously undiscovered fungi from infected wheat samples and sequenced their genomes. "Until now, growers and pathologists have recognised the symptoms of White Grain Disorder, but they haven't known what causes it," said lead researcher Associate...
https://www.biyologlar.com/new-fungi-behind-emerging-wheat-disease -
XVII. International Symposium on the Biology of Actinomycetes 2014-ISBA 17
Dear Fellow Actinomycetologists, 2014 will be the year we meet again with the same enthusiasm we had when we launched the first Symposium in the 1960s. Since then we have successfully executed 16 meetings and for the 17th our host will be the Turkish Actinomycete Group. They are waiting to welcoming you at the beautiful shores of the Aegean Sea. For now please register your interest and stay tuned with the updates to be followed very soon at this web site: www.isba17.com We look forward to...
https://www.biyologlar.com/xvii-international-symposium-on-the-biology-of-actinomycetes-2014-isba-17 -
Fetal mice with Zika infection get microcephaly
Mouse fetuses injected with the Asian Zika virus strain and carried to term within their pregnant mothers display the characteristic features of microcephaly, researchers in China report May 11 in Cell Stem Cell. As expected, the virus infected the neural progenitor cells, and infected brains reveal expression of genes related to viral entry, altered immune response, and cell death. The authors say this is direct evidence that Zika infection causes microcephaly in a mammalian animal...
https://www.biyologlar.com/fetal-mice-with-zika-infection-get-microcephaly -
Fetal mice with Zika infection get microcephaly
Mouse fetuses injected with the Asian Zika virus strain and carried to term within their pregnant mothers display the characteristic features of microcephaly, researchers in China report May 11 in Cell Stem Cell. As expected, the virus infected the neural progenitor cells, and infected brains reveal expression of genes related to viral entry, altered immune response, and cell death. The authors say this is direct evidence that Zika infection causes microcephaly in a mammalian animal...
https://www.biyologlar.com/fetal-mice-with-zika-infection-get-microcephaly -
Neuron unites 2 theoretical models on motion detection
As indicated by their name, photoreceptor cells in the eye respond to light: is an image point bright or dark? They do not indicate the direction of a movement.
https://www.biyologlar.com/neuron-unites-2-theoretical-models-on-motion-detection -
ANTİSENS TEKNOLOJİLERİ HAKKINDA BİLGİ
Antisens teknolojisi insan, hayvan ve bitkilerdeki hastalıkların daha spesifik tedavisi ve yeni keşifleri için ayrıca, fonksiyonel genomik çalışmalar için çok güçlü silahlardan oluşan uygun tekniklerdir. Antisens teknoloji olarak bilinen yöntemde, antisens RNA moleküllerinin hedef genin RNA mesajına spesifik olarak bağlanarak gen ifadesinin moleküler düzenlenişine engel olunmaktadır. Hastalıkların oluşumunda büyük bir paya sahip olan proteinlerin üretimini durdurmak...
https://www.biyologlar.com/antisens-teknolojileri-hakkinda-bilgi -
Deep-sea bacteria could help neutralize greenhouse gas, researchers find
A type of bacteria plucked from the bottom of the ocean could be put to work neutralizing large amounts of industrial carbon dioxide in the Earth's atmosphere, a group of University of Florida researchers has found. Carbon dioxide, a major contributor to the buildup of atmospheric greenhouse gases, can be captured and neutralized in a process known as sequestration. Most atmospheric carbon dioxide is produced from fossil fuel combustion, a waste known as flue gas. But converting the carbon...
https://www.biyologlar.com/deep-sea-bacteria-could-help-neutralize-greenhouse-gas-researchers-find -
Mouse models show how Zika infects a fetus during pregnancy
Researchers at Washington University in St. Louis (WashU) have established the first models of Zika virus transmission from a pregnant mouse to her fetus.
https://www.biyologlar.com/mouse-models-show-how-zika-infects-a-fetus-during-pregnancy -
Mouse models show how Zika infects a fetus during pregnancy
Researchers at Washington University in St. Louis (WashU) have established the first models of Zika virus transmission from a pregnant mouse to her fetus.
https://www.biyologlar.com/mouse-models-show-how-zika-infects-a-fetus-during-pregnancy -
Protein structure paves the way for new broad spectrum antifungals
This ribbon diagram shows two views of the structure of the enzyme Tps2 as it removes a phosphate from a sugar molecule (yellow, orange and red).
https://www.biyologlar.com/protein-structure-paves-the-way-for-new-broad-spectrum-antifungals -
A molecular alarm clock awakens resting ovules
Ovarian follicle of fruit fly, with chromosomes stained in green and dKDM5 protein stained in red.
https://www.biyologlar.com/a-molecular-alarm-clock-awakens-resting-ovules -
A molecular alarm clock awakens resting ovules
Ovarian follicle of fruit fly, with chromosomes stained in green and dKDM5 protein stained in red.
https://www.biyologlar.com/a-molecular-alarm-clock-awakens-resting-ovules -
Intestinal worms 'talk' to gut bacteria to boost immune system
EPFL researchers have discovered how intestinal worm infections cross-talk with gut bacteria to help the immune system. Intestinal worms infect over 2 billion people across the world, mostly children, in areas with poor sanitation. But despite causing serious health problems, worms can actually help the immune system of its host as an indirect way of protecting themselves. The evidence for this is so strong that we are now testing worms for clinical benefits. However, very little is known...
https://www.biyologlar.com/intestinal-worms-talk-to-gut-bacteria-to-boost-immune-system -
VI. Horizons in Molecular Biology and Genetics
Havale ile kayıt için: www.tiny.cc/BilGenT Paypal ile kayıt için: https://horizonsvi.eventbrite.com/ BilGenT (Bilkent Genetik Topluluğu) olarak her sene düzenlediğimiz Horizons in Molecular Biology and Genetics'in altıncısını, 12-13 Nisan 2014 tarihlerinde gerçekleştireceğimizi duyurmaktan mutluluk duyarız. Bu sene de birbirinden farklı alanlarda, yerli ve yabancı 10 konuşmacının katılımıyla ufkumuzu genişletmek ve güzel bir haftasonu geçirmek dileğiyle Horizons in...
https://www.biyologlar.com/vi-horizons-in-molecular-biology-and-genetics