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Tag: "which" at biology news

Scientists seek answers on what activates deadly anthrax spores

...e biology concerns the germination process through which the dormant spore becomes a reproductive, disease-... related bacterium, Bacillus cereus, one strain of which can produce anthrax-like symptoms. The research team includes Conn Mallett, Ph.D., Derek Parsonage,...

Found: Missing sequence of the human Y chromosome

...re copied during evolution. Segmentalduplications, which emerged during the past 30 million years of primat...ues had previously physically mapped theGCY locus, which is thought to be the genetic determinant ofsex-related stature differences in humans and is in close...

U of M researcher examines newly emerging deadly disease

...e disease begins as a respiratory tract infection, which then is infected by Staphylococcus aureus. The infection then moves to the lungs, making superantigens (bacterial toxins that activate large numbers of T cells), often leading to death due to hypertension and shock. Purpura fulminans has been identif...

NYU Study Reveals How Brain's Immune System Fights Viral Encephalitis

...RNA and proteins, and blocking the virus' release, which could infect other cells in the brain. "There is ...interferons block the virus from forming particles which can be released and infect other neurons. This is critical, since the immune system does not kill in...

Study finds more than one-third of human genome regulated by RNA

...roduced. In this study, the researchers determined which portion ofthe microRNA is most important for this process, and identifiedadditional determinants in the messenger RNA that are likely tocontribute to recognition by microRNAs.These findings contribute to the recent interest in potentialtherapeutic us...

Live Recombinant Adenovirus Vaccine Technique Explored

...es that provide longer-lasting disease protection, which would be particularly beneficial for people living...administer and multiple doses to provide immunity, which is not feasible for people living in many parts of the world,?explained Gary Ketner, PhD, senior aut...

The secret lives of whales

...boring whale falls are about 5-10 kilometers away, which is a very reasonable dispersal distance for the an...en thinking about whale herds at the wrong scales, which has been constrained by the limitations of their recording and visual observation abilities. “Sudden...

NYU researchers simulate molecular biological clock

...roduced. In this study, the researchers determined which portion ofthe microRNA is most important for this process, and identifiedadditional determinants in the messenger RNA that are likely tocontribute to recognition by microRNAs.These findings contribute to the recent interest in potentialtherapeutic us...

Dinosaur DNA? New Patent Covers Degraded DNA recovery

...at MatrixDesign are able to create a template from which to multiply the genetic material. That process is ...ve -- at microscopic levels -- of the species from which the degraded sample was obtained. Dr. Ensley and his team hope to apply this new technology to prod...

Mitochondrial DNA mutations play significant role in prostate cancer

...onal Academy of Sciences(PNAS). Mitochondrial DNA, which is separate from nuclear DNA, is foundin the hundreds of mitochondria located in the cytoplasm outside ofeach cell's nucleus. The mitochondria often are called the "powerhouse"of the cell because they produce about 90 percent of the body's energy.Joh...

Gene therapy converts dead bone graft to new, living tissue

...ssue in an experiment involving mice. The advance, which uses gene therapy to stimulate the body into treat...t were its own tissue instead of a foreign object, which would normally trigger the body to wrap the "invader" in scar tissue. "That recognition is the key,...

Researchers reveal the infectious impact of salmon farms on wild salmon

...s, not only salmon, but other fish such as herring which are the spark plugs of the entire ecosystems ?everything depends on them ?from salmon to whales to seabirds. Every commercially important fish is either directly or indirectly dependent on herring." "Previous studies have been dismissed by industry,...

Molecular machine may lead to new drugs to combat human diseases

...researchers froze one of these molecular machines, which are chemical complexes known as a Group I intron, ...ed introns reveal their structure and the sites at which they bind with various molecules to cause biochemical reactions. Scientists can use this knowledge t...

Sea skate experiment sheds light on human cell transport

...phorylation takes place. This activates the gates, which open to release excess water along with salts and other organic material. The researchers made their discovery by using a plant-based substance to block an enzyme that causes phosphorylation. The result: The gates wouldn't open. These findings are p...

Color-blind method opens new doors in DNA sequencing

...nger sequencing, results in smaller DNA fragments, which are then separated base-by-base. Because the DNA f... overall project on sequencing-by-synthesis (SBS), which is funded by the National Human Genome Research Institute. SBS could lead to the ability to sequence...

Clam embryo study shows pollutant mixture adversely affects nerve cell development

...ffect neuron growth in a model organism.The study, which is reported in the January 2005 issue of Environme...earch is focused on afamily of genes known as P53, which helps to regulate the cell cycle.They have also moved their studies to a new model system: thezebraf...

Female sex hormones play a vital role in defense against sexually transmitted diseases

...dy with infectious disease clinicians in Hamilton, which may begin in as early as the next few months. Addi...t issues of co-infection with both HIV-1 and HSV-2 which is a big problem clinically. The two studies were posted online on the Journal of Virology website ...

Study identifies predictors of HIV drug resistance in patients beginning triple therapy

...ffect neuron growth in a model organism.The study, which is reported in the January 2005 issue of Environme...earch is focused on afamily of genes known as P53, which helps to regulate the cell cycle.They have also moved their studies to a new model system: thezebraf...

An HIV Protein Plays a Surprising Role in Gene Activation

...sembly sometimes also requires activator proteins, which can enhance transcriptional activity by supporting...here. Each effector was required for PIC assembly, which was in turn required to activate transcription. The big surprise came in the next round of experime...

Mouse brain tumors mimic those in human genetic disorder

...research, Gutmann's team developed a mousemodel in which the animals, like humans with the disease, have on...oped tumors along the optic nerve and opticchiasm, which transmit visual information from the eye to the brain.This type of tumor, called an optic pathway gl...

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