Isle Royale Wolves Bounce Back
...ensus for the National Park Service, points to two main causes forthe wolves' reproductive success this year. "The park's moose have been generally in poor condition due to a heavywinter tick infestation caused by the mild winter and early spring of a yearago," he says. "The unusual heat of the summer als...Powerful Anti-AIDS Agent Found In Tears And In Urine Of Pregnant Women
...rimester of pregnancy when hCGlevels are high. The main function of hCG is to stabilize pregnancy and protectthe embryo from rejection by the mother's body. However proof of hCG's effects wasn't straightforward. Although crudepreparations of hCG inhibited the growth of Kaposi's sarcoma cells andHIV-i...Residential Dust Control Fails To Reduce Blood Lead Levels In Children
...of general and community pediatricsand the study's main author. The study involved 275 urban children, beginning when they were 6 months old. Dust control advisors visited about half these families up to eight times overthe next 18 months to recommend and encourage cleaning techniques to reduce dustlead ......wo years. Shade providedby the fern fronds was the main determining factor in the growth patterns of thetrees in the study. "The fern understory is a powerful filter," says George."Fern presence in a forest can determine the size, the species, and the densityof the trees." Earthworms Shed Light on Plant...Fishermen Are Killing Brown Pelicans With Kindness
...rly seaports. Kelton says humans are the pelicans' main threat. "We're at the root of the problem," said Kelton, whose seabird station isalso supporting the educational campaign. "There aren't any wild placesleft in Florida; we're surrounded by condominiums and sea walls, andpelican habitat is the prime h...Earliest Modern Tree Lived 360-345 Million Years Ago
...time that could bud and continue growing after the main axis tip died; althoughseed plants now have that ability." "The attachment of branches was the same as modern trees, with swelling at thebranch base to form a strengthening collar and with internal layers of wooddovetailed to resist breaking," says S...Sandia Discovery About Protein May Help Clean Up Pollutants, Find Cures For Diseases
...e heme's shape changes as itperforms its job. "The main thing my discovery has done is provide a new way to look athemeproteins and what they do," he says. "We're revealing previously hiddeninfluences of the protein on the heme structure."Shelnutt says that initially his findings were so startling that wh...1999 Spring Meeting: Information For Media Representatives
...s, andfor-profit corporations must register at the main registration desk and pay theappropriate fees. Eligible persons are encouraged to pre-register via the form at the end of thismessage. It may be returned by e-mail, fax, or mail. While supplies last,pre-registrants will receive the 404 page book of ...Studies Of A Gene For A Rare Form Of Rickets Shed Light On Vitamin D Deficiencies
...to sunlight -- into ahormone called calcitrol. The main work for calcitrol as a hormone is toregulate the absorption of calcium from the intestine into the blood and thedeposition of calcium into bone. Without it, adult bones become brittle andchildren's bones do not grow. The calcitrol-calcium combinatio...Researchers Identify Molecule That May Be Key In Pheromone Processing
...sal organ (VNO), whereas odors are received by the main olfactoryepithelium (MOE). While pheromones are believed to play a role in the timing ofwomen's menstrual cycles, any larger role in human physiology is poorlyunderstood. Earlier research by Liman, Corey and others has shown that the molecularpathw...Breast Milk Of Women Who Eat Lake Ontario Fish Contains High Levels Of PCBs, UB Study Finds
...pulations that eat thefish. Dietary intake is the main source of exposure to these compounds for thegeneral population and is a critical determinant of the toxicants in human milk. This research reports results of the analysis of 100 breast-milk samplesfrom 98 lactating women in the cohort. F...UF Anthropologists Study Techniques To Solve Mysteries Of Dead Bodies
...are used increasingly, he said. One of the study's main findings so far is that searches for skeletonsusually need to be extended over a much greater area than previouslybelieved, Falsetti said. "This kind of work is important because we do get a number of calls aboutinformants who say they didn't do it, ...Physicists Find Simple Solution To Great-And-Small Mystery
...s of streams channelingprecipitated water into the main stream of a river and found that allometricscaling, as predicted by their theorem, holds in that case too. The physicists say the beauty of their theorem is that it is independent of thenature of the system. "River networks in the drainage basin scu...Report: High Carbon Dioxide Boosts Duke Forest Growth By 25 Percent
... professor WilliamSchlesinger, the article's other main author. But both scientists cautioned that such a high sustained uptake isactually unlikely, for several reasons. First, the Duke Forest plots where theU.S. Department of Energy-funded study is being conducted are dominated by13-year-old lobl...Genetic testing of pregnant women with liver illness could save infant lives
... the New England Journal ofMedicine. "The main message here is that families should be tested before thebabies are born so that the babies can be appropriately treated and death can beprevented," said Arnold W. Strauss, M.D., professor of pediatrics, who headedthe study. "It's also important to t...Report in Science on x-ray crystal structure of matrix Metalloproteinase-2 (MMP-2)
...collagen, the principal substrate of MMP-2 and the main structuralcomponent of the basal lamina, thus providing the means for tumors to traversetissue barriers. Although originally viewed with skepticism, this role of MMP-2in tumor invasion has been confirmed by numerous laboratories, and is now aprimary...'Altered state' may be responsible for creating important brain chemicals
...ind the normal right-handed DNA double helix. The main processthat produces such an unwinding is transcription (the synthesis of messengerRNA), which is used as a template for assembling proteins in biological systems. The system works this way: When the enzyme making RNA, called RNApolymerase, m...Gene triggers formation of sensory cells in the ear
...ininterprets as sound or movement. Zoghbi, whose main research explores disorders of balance, began thiscollaboration with Hugo Bellen , also anHHMI investigator at Baylor, in 1996 when he brought to her attention a line ofuncoordinated fruit flies that lacked a gene called atonal . Thescientists knew...Discovery of new bird species in China, oldest beak shows evolution complexity
...rtin said. "It no longer can be one of the main supports for a dinosaurian originof birds," he said....New targets for nerve diseases, nerve regrowth: It's all in the handshake
...dshake may be to regulate nerveregeneration. "The main reason nerves don't regenerate in the brain or spinalcord is because myelin inhibits nerve regrowth there." MAG, which is found inhigh levels on myelin in the central nervous system, is thought to be animportant inhibitor of nerve regrowth. After ...