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Tag: "physical" at biology news

A gene's first 'kiss' sets off that affair known as puberty

...ions that, over time, produces puberty's tell-tale physical changes, including the development of breasts in g...ne and estradiol, the culprits responsible for the physical changes and emotional baggage of male and female puberty, respectively. "We now have very good evid...

W.M. Keck Foundation funds study of friendly microbes

...ith expertise in the biological, computational and physical sciences," Gordon says. "We are dedicated to integrating concepts and technologies from a variety of disciplines so that we can analyze the massive amounts of information encoded in genomes and experimentally test predictions about gene functions tha...

Ecological destruction fuels emerging diseases

...em poses a daunting technical challenge. Since the physical characteristics of many parasites are very similar, Dr. Brooks and his colleagues are using the latest molecular taxonomy tools to classify parasites based on genetic characteristics. "These things are evolutionary accidents waiting to happen," he w...

Inexpensive, mass-produced genes core of synthetic biology advances at UH

...e, the weeklyscientific journal for biological and physical sciences research. “Synthetic genes are like a box ofLego building blocks,?Gao said. “Their organization is very complex,even in simple organisms. By making programmed synthesis of geneseconomical, we can provide more efficient tools to aid the effo...

Cytoplasm affects the number of vertebrae in carp-goldfish clones

...pecies, Cyprinus carpio, in appearance and in most physical traits. The number of vertebrae in the clones, however, was in the range of the recipient species, Carassius auratus. Yong-Hua Sun, Shang-Ping Chen, Ya-Ping Wang, Wei Hu, and Zuo-Yan Zhu, who conducted this work at the Institute of Hydrobiology, Ch...

Needling Chromosomes Reveals Cell Division Secret

...ion todistinguish between visible separateness and physical separateness."To study chromatid adhesion, Paliulis mastered the high art ofmanipulating two infinitesimal glass needles to impale each of twosister chromatids in cultured grasshopper cells at the appropriate timein cell division. Then, she would eve...

New research questions basic tenet of neuron function

...motional state, reactions to stress, pain, and the physical drives of sleep, appetite and sexuality. A better understanding of such fundamental mechanisms of neurotransmitter release will aid researchers in their investigations of psychiatric disorders and neurological disorders such as mental retardation, a...

Study: Soap And Water Work Best In Ridding Hands Of Disease Viruses

...Bennett said. For removing viruses from the hands, physical removal with soap and water was most effective since some viruses are hardy and relatively resistant to disinfection. A report on the findings appears in the March issue of the American Journal of Infection Control. Other authors are Drs. William A....

Alcohol's effects on gene expression in the central nervous system

...of the 'symptoms' of addiction, such as tolerance, physical dependence, and craving, as well as the 'consequences' of alcoholism, such as brain damage. "The challenge has been to find out which genes ?out of more than 50,000 ?are turned on or off in the brains of alcoholics," he said. "Microarray studies ?th...

Examination of internal 'wiring' of yeast, worm, and fly reveals conserved circuits

...of tens of thousands of laboratory measurements of physical interactions of proteins in more than 100 species. Ideker and his colleagues developed a computerized tool called PathBLAST to search through the Database of Interacting Proteins for protein interactions that are conserved in the three most thoroughl...

Key Trigger Of Opioid Withdrawal Symptoms Found

...led a transporter--could relieve some of the early physical symptoms of withdrawal, such as teeth-chattering, uncontrolled shaking, and jumpiness. Such drugs could become part of the arsenal of medicines and behavioral techniques aimed at helping addicts kick their habits. To zero in on the machinery underl...

Family trees of ancient bacteria reveal evolutionary moves

...force in the early Earth's development rather than physical processes, such as plate tectonics. Carrine Blank, Ph.D., Washington University assistant professor of geomicrobiology in the Department of Earth & Planetary Sciences in Arts & Sciences, studying Cyanobacteria ?bacteria that use light, water...

Vascular structure and function improve with diet and exercise

...chers studied the combined effects of personalized physical exercise and Mediterranean-style diet plans in vol... that the calories and composition of the diet and physical activity prescribed were matched to fitness level in an individually tailored fashion and delivered ...

New Insights Into HIV Immunity Suggest Alternative Approach to Vaccines

... saw that the rare human monoclonal antibodies had physical characteristics very similar to autoantibodies found in autoimmune disease ?in other words, to the antibodies the normal immune system does not allow to be made," Haynes said. The results provide a new goal for future HIV research, Haynes said. "We ...

Antibiotic might fight HIV-induced neurological problems

...e of moderate or severe encephalitis and much more physical evidence of damage to brain cells, the researchers report. "The infection in the animal model is predictable and aggressive, so we can get meaningful data by studying fewer animals," says Zink, who was on the team that developed the model about six ...

US life expectancy about to decline, researchers say

...l and environmental factors that influence diet or physical activity levels, says Dr. David Ludwig, associate professor and director of the Obesity Program at Children's Hospital Boston and a co-author of the study. For children in particular, fast food, sugar-sweetened beverages and other high-calorie/low-qu...

Programmable cells: Engineer turns bacteria into living computers

... is to have the cells secrete materials that build physical devices such as antennas or transmitters in places that are hard for humans to reach. Programmed cells also could be used to control the repair or construction of tissues within the body, possibly guiding stem cells to the locations where they are ne...

Dead zone area in Gulf could be increasing, researchers say

...ar we found in late March," DiMarco says. "If the physical conditions we noticed continue, it could mean an unusually strong hypoxic zone this year, and that's not good news." DiMarco said the team studied an area between Southwest Pass, La., and the Calcasieu ship channel. They were on the Gyre, a research...

Discovery Promises Simpler Therapy for Sickle Cell Disease

...cell disease have generally been attributed to the physical obstruction of blood vessels by distorted, or "sickled," and rigid red cells, Stamler said. The new findings, for the first time, implicate abnormal vessel dilation by the red cells themselves in oxygen deficiency. That oxygen deficiency, in turn, ma...

Buying Time Through Hibernation on Demand

...rolonged hibernation-like states with no lingering physical or neurological damage. For example: * In May 199...F). She was resuscitated and since has made a good physical and mental recovery. * More recently, in February 2001, Canadian toddler Erika Nordby made headline...

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