Tag: "multiply" at biology news

New Sensor Provides First Instant Test For Toxic E. coli Organism

... relies on polymerase chain reaction technology to multiply theamount of bacterial DNA present in a sample to detectable levels. Several hours must pass, however, before results can be obtained. The instant analysis provided by Berkeley Lab's new sensors has obviousadvantages as a public health tool. ...

Newly Discovered Human Protein Provides Important Target For Cancer Therapy

...henthey die. In contrast, cancer cells divide and multiply without limit. Evidence collected by many laboratories indicates that the clock orcounting mechanism relies on specialized bits of DNA, called telomeres, at theends of each human chromosome. In the absence of telomerase enzyme, thesespeciali...

Study Shows Hereditary Legacy Of Radiation Exposure

...ne without a history of radiation-- and allowed to multiply several times. Then the scientists count thetotal number of cells (one of the embryos has a special marker so it canbe distinguished from the other). If there are fewer cells from the cellsthat received radiation, then they have a growth disadvantage...

Hultgren Receives Prestigious Eli Lilly Award

...s into locks. Anchored in place, the bacterium can multiply rather than beingwashed away by the stream of urine. Combining genetic manipulations with cell biology, protein chemistry,high-resolution electron microscopy and x-ray crystallography, Hultgren andcolleagues are following three lines of re...

Scientists Discover A Secret Of Bacterial Communication

..., it may attach to it. At first thebacterial cells multiply and spread across the surface, but when they reach acertain density, they build a complex biofilm structure with built in watertunnels to carry nutrition into the cells and carry the waste out. Scientistscall this process differentiation. The message...

New Tests Demonstrate MuchLarger, More Specific Immune Responses To Viruses

...ed. Although it is well known that T cells multiply in the body in responseto viral infection, it has been difficult to measure the number of cells andexactly what they are responding to. The most common assay used to measure theresponse, the limiting dilution analysis (LDA) has led scientists to bel...

Crystal Structure Of Key HIV Protein Reveals New Treatment Targets

... viral Houdini," says Dr. Sodroski. "It carries a multiply protectedinfection machinery that frustrates host defenses. Understanding this machineryshould help us target medical interventions to the weak spots in the armor." The research was funded by NIAID; the National Institute of General MedicalSciences;...

Peptic Ulcers: Stress Does Matter, After All

...to developing an ulcer, and may even help H.pylori multiply in the body. Researchers are trying to trace in both animals and humans how stress might promote H.pylori infection (present in most adults) into ulcers (which develop in few). For instance, the stomach secretes more acid under stress, which ...

Virginia Tech Biologists' Discoveries Could Help Target Cancer Treatment

...e Janssen ResearchFoundation. Cancer cells multiply faster than normal cells, and continue tomultiply, or proliferate. Whereas normal cells receive molecular informationthat stops cell proliferation and starts cell differentiation, in the cancercell the signals are either not present or not received. ...

New Class Of Protease Inhibitors May Be Effective In Treating One Of Latin America's Most Devastating Diseases

..., which can last for decades, T.cruzi continues to multiply and weaken the heart. As a result, the victim isslowly crippled and eventually dies as a result of heart failure. Before cysteine protease inhibitors can be distributed for human use, they stillmust pass additional toxicology and safety studies whic...

Cattle Diets Could Control E. Coli Danger

...organisms with the appropriate genesto survive and multiply where others cannot. Because cattle have been fedhigh-grain, growth-promoting diets for more than 40 years, he says, there hasbeen ample opportunity to select acid-resistant forms. Further research is needed to identify the acid-resistance...

Hutchinson Center Director Wins 'America's Nobel'

... regulation -- how cells determine when and how to multiply or otherwisedevelop, and how that process can go awry -- is fundamental to understanding howcancer cells mutate and to developing approaches that predict, prevent orreverse that mutation. The Albert and Mary Lasker Foundation since 1946 has distribut...

A Protein Switch May Turn On Heart Cells To Combat Heart Disease

.... "We're trying to find a way to get the cells to multiply instead of enlarge," hesays. Cells that enlarge c...works over time and whether these heart cells will multiply after a stress, suchas heart attack. Extending these studies, MacLellan and colleagues identified a ...

Scientists Discover Function For Type III TGF-Beta Receptor

...heir neighbors and migrate. Those cellseventually multiply and give rise to the heart's valves and septa. It has been a mystery why only a small population of cells receives the signalto change. "Their neighbors never undergo this epithelial-mesenchymal transformation,"Barnett said. "We wanted to know why, ...

The Green Party

...gy in light. Thisability allows them to divide and multiply in a stable manner. NASA's "Life onthe Edge" project tests some of the limits to this remarkable behavior. Byclosing several green biomass mixtures into sealed jars, these organisms arefrozen within a deep freezer to a frigid -80 deg C (-112 deg F), ...

Scientists grow blood-producing stem cells outside the body

...doctors might remove stem cells from a patient,and multiply them in the laboratory while the patient is receiv...aused by single mutated (abnormal) genes, and then multiply these"improved" stem cells. The newly engineered blood stem cells will then carry thecorrected gene ...

New molecule boosts stem cell survival

...ature cells that originate in the bone marrow - to multiply withoutdifferentiation in the test tube. This achievement, described in the August issue of the journal Blood, mayimprove bone marrow transplantation, in which stem cells are infused into apatient to replace defective or malignant marrow. The study m...

Study at Cedars-Sinai Medical Center investigates possible protective effects of plant compounds on the uterus

...rily responsible fordirecting endometrial cells to multiply or proliferate. While proliferation isnecessary during the "build-up" phase of the endometrium's cycle, estrogen'sproliferative effects need to be constrained by other hormones, such asprogesterone. If estrogen stimulation continues unchecked, endom...

Road dust: Rural vehicles emit more pollutants than urban ones

...says Turner. "When you then consider that you can multiply this daily value by the many thousands of miles vehicles travel on the roads each day, you get a clearer view of what role the automobile potentially plays in air pollution." Turner's results were published in a fall 1999 issue of the Journal of...

New science resources available from the ESA

...ow some conditions allow these invasive species to multiply to great numbers, the potential they pose for severe environmental damage, and how people can control or prevent their outbreaks. The authors, ecologists from across the globe, note that only a small number of immigrant species actually survive the...

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(Date:10/31/2014)... October 31, 2014 At the start ... families narrowly escaping carbon monoxide poisoning in their homes. ... weeks away, one family-owned, Missouri-based heating and cooling company ... making sure families start the home heating season with ... secure. , Beginning Nov. 1, 2014, E and ...
(Date:10/31/2014)... -- Surgery for low back pain caused by spinal ... you live, a new report says. "Nearly 80 ... some point in their lives, and about 30 million ... spine problem," co-author Brook Martin, of the Dartmouth Institute ... college news release. In spinal stenosis, thickening of ...
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(Date:10/31/2014)... 31, 2014 Florida Air Academy, ... girls in grades 6-12, is taking the lead ... injuries and concussions, becoming the first high school ... (Immediate Post-Concussion Assessment and Cognitive Testing) computerized assessment ... Player' lawsuit grabs the headlines, and the Centers ...
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