MIT researchers probe bones' tiny building blocks
... team found that the mechanical properties of bone vary greatly within a single region only two micrometers (thousandths of a meter) wide. Because a variety of disorders tied to disease or aging lead to changes in bone structure, the researchers' discovery of the non-uniformity of bone's mechanical proper...When lava flows and glaciers recede, predicting how species take over
...uantifying rates of community change and how these vary as the community ages. She then collected data on over 60 different communitiesa novel approach in succession researchand documented the changes in species composition throughout succession. Using these results, she was able to relate temporal patter...Cornell lab confirms deadly fish virus spreading to new species
... be carriers, and visible signs of the disease may vary from species to species. Containing the spread of the virus in New York will require restrictions on the movement of live fish, testing fish and surveillance. For instance, New York state regulations require that bait fish be used in the same body o...Scientists discover cost-effective ways to improve crop output in Uganda
...lternative practice to increasing crop output will vary according to each farmers situation. While manure application may be best for fields on farms that also house animals as the source of the manure, farmers who do not have the means to purchase fertilizer may profit more from the use of the cowpea-sor...Drought sensitivity shapes species distribution patterns in tropical forests
...irrigated conditions, which confirmed that species vary widely in drought sensitivity. The researchers also assessed regional plant species distribution across two large plots on opposite sides of the Isthmus of Panama. Through this assessment it was found that the plants densities at the dry Pacific side...Survival of the rarest: Fruit flies shed light on the evolution of behavior
...r one explanation for why individuals, in general, vary so much from one to another in almost all species. The researchers' next step is to show that this phenomenon is also taking place in the wild. In addition, since the foraging gene is found in many animals, including honeybees, mice and humans, th...Species thrive when sexual dimorphism broadens their niches
... irregular twigs. West Indian anole species also vary greatly in their degree of sexual dimorphism, ranging from species where adult males and females are the same size to those where the mass of adult males is triple than of adult females. Sexual differences in microhabitat use, diet, and behavior are ...Gene mutation linked to cognition is found only in humans
The human and chimpanzee genomes vary by just 1.2 percent, yet there is a considerable difference in the mental and linguistic capabilities between the two species. A new study showed that a certain form of neuropsin, a protein that plays a role in learning and memory, is expressed only ...Premature births may be linked to seasonal levels of pesticides and nitrates in surface water
...dianapolis. "Preterm births in the United States vary month to month in a recurrent and seasonal manner. Pesticides and nitrates similarly vary seasonally in surface water throughout the U.S. Nitrates and pesticides can disrupt endocrine hormo...Drought limits tropical plant distributions, scientists at the Smithsonian report
...the tropics, rainfall and water availability often vary dramatically across small distances. "The Isthmus of Panama is the ideal place to test the idea that the distribution of plant species is influenced by their ability to tolerate a lack of water," said researcher and article author Bettina Engelbrech...'War Between the Sexes': The coevolution of genitalia in waterfowl
...sk why different lineages of ducks and other birds vary in breeding biology and genital complexity. ...Army research mission focused on autism
...isease Control. Alterations in health and behavior vary widely from mild to severe, leading to their general classification as Autism Spectrum Disorders. About 10 percent of individuals with ASD develop autism secondary to a known genetic disorder. The cause of ASD is not certain; however, parents of ASD ...Highlighted sessions of ASBMB's 2007 Annual Meeting
...ted sessions follow. The times indicated below may vary depending on the time taken by preceding presentations. SUNDAY, APRIL 29 Topic: Treatment for Depression Session: Science at Undergraduate Institutions Time/Location: 4:35 p.m.-5:05 p.m., Room 209C Title: "Tricyclic Antidepressants, bu...Antioxidant found in many foods and red wine is potent and selective killer of leukemia cells
...ic forms of leukemia, each with many subtypes that vary in their response to treatment. According to the National Cancer Institute, about 44,000 new leukemia cases will be diagnosed in the United States in 2007, and there will be about 22,000 leukemia-related deaths. Based on previous reports that antho...Award lectures for ASBMB's 2007 Annual Meeting
...ard Lectures follow. The times indicated below may vary depending on the time taken by preceding presentations. SATURDAY, APRIL 28 ASBMB Opening Lecture and Herbert Tabor/Journal of Biological Chemistry Lectureship 6:05 p.m.-6:50 p.m., Ballroom C "Tyrosine Phosphorylation: From Discovery to the Kin...ACS News Service Weekly PressPac -- April 11, 2007
... estrogen and choosing batches of animal feed that vary widely in their estrogenic activities. Bias is even evident in the National Toxicology Programs assessment of BPA, the writer notes. A panel chosen to review the data was selected with help from Sciences International, an outside contractor with t...Structural basis for photoswitching in fluorescent proteins brought into focus
... that we can permanently switch them off and on or vary the time delay." However, he said, the mechanism of photoswitching was unknown, and in many cases the proteins returned to their stable state randomly and spontaneously. Using a combination of rational mutagenesis and directed evolution, UO docto...Study examines calorie restriction and glycemic load
...dman School. "Underreporting of caloric intake can vary between 5 and 50 percent. By providing the study food for the first six months, we did not have to worry as much about lifestyle factors like shopping and cooking habits interfering with dietary change." Roberts previously conducted a pilot study s......ear in the United States. Five-year survival rates vary wildly in different reports, but as few as 25 percent of patients survive five years. Many synovial sarcomas already have spread by the time they are diagnosed, and about 80 percent of those patients die, Capecchi says. Surgery is the most common ......uahua to the largest Great Dane, dogs dramatically vary in size, much more than most other animals. Now scientists have discovered a genetic basis for this diversity. A new study published in tomorrows edition of the research journal Science reveals a genetic marker that may determine whether dogs are...