Predators drive evolution of virtual prey appearance
...ularly if the predators use "searching images" and restrict their search to the most abundant prey types. The research results of Alan Bond and Alan Kamil are published in the February 7 issue of Nature. Bond and Kamil, whose research is supported by the National Science Foundation (NSF), describe using f...Maryland's proposed crab regulations could have large economic impacts
...ollege Park, MD. - A state of Maryland proposal to restrict possession of sponge crabs and crabs smaller than 5-1/4 inches, thus making them unavailable for processing, would add up to a total loss of nearly $18 million annually, according to economists at the Maryland Sea Grant Extension Program and the Univ...UNC botanist spearheads ongoing effort to curtail movement of pest plant species
...on. In 1998, we were the first garden to purposely restrict our distribution of plants that might be invasive elsewhere. The following year, the N.C. Botanical Garden released what White called the Chapel Hill Thesis, a statement of eight principles aimed at persuading horticulturists to be more responsible ...Scientists milk animals for malaria vaccine
... in the poorest regions of the world, so we cannot restrict our focus simply to finding a vaccine that works, he says. Rather, we must look for innovative strategies that will bring effective vaccines to regions where economic conditions preclude the use of costly alternatives. Transgenic animals could be o...Low doses of radiation in nature may pose more risk
...thways, called gap junctions, the scientists could restrict the damage to the 10 percent of cells that had directly received alpha particles. The results, Dr. Hei says, suggest that signaling networks are responsible for spreading the damage. The signaling mechanism, however, is unknown and requiresfurther re......ome patients." Matrix metalloproteinase inhibitors restrict the growth and spread of solid tumors by blocking blood vessel growth to the site of tumors. Marimastat is also being tested in ovarian and gastric cancers....Fragmentation may limit songbird sex lives
...y found that these low levels of isolation did not restrict the birds' movements. Rather, males in fragments spent far more time out of their territories than those in continuous forest (about 16% vs. 5%) and also flew farther. These extra costs of living in fragments could explain why males occupy on about a......, Heraklion. Protected by archaeological laws that restrict development, Arhanes has recently focused on preserving and restoring its treasure of Neo-classical architecture. While the town does not attract the high volume of overnight tourists that most of the coastal towns do, it's becoming a popular day tri...Activity decrease in exercising older adults linked to decline in resting metabolism
... "Older people who grow sedentary must continually restrict their caloric intake in order to maintain healthy weight, a change that eventually may limit their ability to achieve recommended daily allowances of vitamins and nutrients," said Bell. Studies on active and inactive young adults in their 20s and 30s......A activity. The discovery that CPY26 functions to restrict the field of RA signaling represents a significant advance in our understanding of the role and pattern of retinoic acid activity in the developing embryo. Further work to delineate the pathway of CPY26 action will lend insight into the molecular me...Obese as likely as lean women to feel full on low energy density meals
...esults show, once again, that people don't have to restrict portion sizes and, in some cases, may even be able to eat more if they reduce the energy density of their meals." "If you reduce fat content, you also usually reduce energy density. However, it's not safe to assume that every reduced fat food is ...Strict diets required for chronic disease management may increase risk of unhealthy eating behaviors
...monitor food intake. Individuals with PKU have to restrict severely their consumption of protein-rich foods like meat, eggs, and milk, and also certain fruits, vegetables, and grains. Deviation from diet regimens carries serious health risks for both groups. Diabetics who deviate are at increased risk f...PSA level predicts future prostate growth
...rounds the urethra. If it becomes enlarged, it can restrict urine flow and cause discomfort. While prostate cancer is one cause of abnormal prostate growth, prostate growth is not always cancerous. An enlarged prostate, benign prostatic hyperplasia (BPH), however, can cause serious urinary problems, includi...Deadly to cattle and humans, prions may help other organisms survive, researchers find
...isms. The ability to form prions allows a cell to restrict activity of a specific protein indefinitely, without ever losing the potential to restore its original activity, they point out. If the prion form of the protein is passed on to progeny, this new trait will be passed on as well. Normally, heritable ...Wistar Institute scientists find key piece in gene regulation puzzle
...activation. Histones are proteins that bind to and restrict the activity of DNA in thechromosomes. Before the gene activation can occur, general transcription factorand coactivator proteins must bind to DNA and DNA and histones must be separatedthrough a process that is facilitated by histone acetylation. S...IFT experts inform and caution consumers about dietary supplements
...a supplement is unsafe or mislabeled before it can restrict orban the product's use, say Camire and Kantor. "The passage of DSHEA has created an economic and regulatory environmentfavorable to the expanded marketing, sales, and distribution of dietarysupplements," they note. "Opportunities for consum...$6.75 Million to extend primate studies of diet and aging
...ent of diet,some people may be highly motivated to restrict their calorie intakebecause their genes may predispose them to diseases which are prevented bycalorie restriction in laboratory mice. These include many types of cancers and lupus. Another potential but long-term application may come through thedevel...Benefits Are Likely From Vitamin B-6 In Premenstrual Syndrome
...n light of recent UK government recommendations to restrict dosage. They based their study on nine published trials representing 940 women with premenstrual syndrome and found some evidence to suggest that 100mg of vitamin B-6 daily (and possibly only 50mg) seemed to be beneficial in the management of premen......neral population. The body produces angiotensin to restrict blood vessels and help regulate bloodpressure. Th... up," says Flack. "While everyone may not need to restrict sodiumintake in the short term, buried within that group of people is a subset ofpeople who are real......orse, electrical amplification removes the need to restrict these qualities (4aMU2). Esther J. Langeheinecke of the University of Tuebingen in Germany ( esther.langeheinecke@uni-tuebingen.de ) will discuss the acoustical signatures of joy, fear, anger, and sadness in singing (5aMUb11). Tapio Lokki of the He...