Control mechanism for biological pattern formation decoded
...re simple embryonic structures able to produce the varied and complex manifestations of living nature" Scientists in Freiburg have now identified proteins which regulate the pattern of hair formation in mice. They have found that proteins produced by the skin, WNTs, which are essential for the induction of ......he silica pores by lining them with compounds that varied depending on the enzyme to be ensnaredamine and ca...solution. OPH activity doubled, while GOX activity varied from 30 percent to 160 percent, suggesting that the enzymes orientation in the pore is important. ...Living view in animals shows how cells decide to make proteins
...e and splice genetic material to create unique and varied proteins. The scientists say the findings, made ...nt proteins in different tissues and organs. These varied proteins, in turn, dictate the function of each tissue or organ. The findings also may offer insig...New approach to BSE successful in lab
...mmarises the results. BSE-resistant cattle" It varied how much longer they lived: if only a few cells could produce siRNAs, the mice died at almost the same time as the control mice, i.e. on average after 170 days. However, if the majority of the brain cells were protected by siRNA, the mice survived th...Varying weight training intensity increases growth hormone in women
...rowth hormone, used different testing methods, and varied weight training regimens. The research found that ... these findings: The presence of growth hormone varied with the training regimen. The presence of growth hormone varied with the test used to detect it...Highlights from the December 2006 Journal of the American Dietetic Association
...meal, the same foods were served, but the beverage varied among cola, diet cola and water. Portion sizes of the drinks ranged between 12 ounces and 18 ounces. The researchers found that being served a larger drink significantly increased the amount of the beverage the participants consumed at the meals, r......structure and characteristics of these genetically varied little organisms, it would be highly useful to be able to determine their masses and how much these vary within a given population. Researchers in Taiwan have now used very gentle ionization techniques and a miniaturized ion trap of their own devisin......rary", a randomly generated large number of highly varied RNA sequences, the scientists selected two short hairpin-shaped aptamers that bind very strongly and specifically to the riboswitch in the "on" position. It turned out that the two hairpins bind to different locations: one to the TPP binding site and...Study helps explain why botulinum toxin is so deadly
...und the binding site on the protein receptor, they varied it until the toxin could no longer bind to it. If a mutated toxin was made to attach to the mutated receptor, the combination might target botulinum toxin against over-active cells in the body, Chapman suggests. Using genetic engineering, "you might...Study finds the air rich with bacteria
...onio and Austin. Surprisingly, they found a widely varied bacterial population that rivals the diversity found in soil. They also found naturally occurring relatives of microbes that could be used in bioterrorist attacks -- although many of these relatives are harmless. "Before this study, no one had a se...Paying attention sets off symphony of cell synchronization
... brighter stimuli, as expected, but responses also varied depending on attention. The patterns of these brain waves allowed the investigators to obtain a thorough description of how attention altered neural function. "For dynamic stimuli at the focus of attention, the timing of brain activity became more p...Scientists develop method to find genetic basis for plant variation
...er, Salt used DNA microarrays to detect genes that varied in the two coastal populations. He cross-referenced this information with the database to seek out genetic differences that may play a role in regulating sodium levels. Salt found that the costal populations had a different version of the gene call...Recurrence of a flu pandemic similar to infamous 1918 flu could kill 62 million
... and they know even less about how mortality rates varied in different parts of the world. In fact, most his...India, death rates from the 1918-1920 flu pandemic varied more than 39-fold. The researchers then took the relationship observed in 1918 between per capita...ACS News Service Weekly PressPac -- Dec. 20, 2006
..., the percentage of samples positive for aflatoxin varied from study to study, the researchers found. However, even the positive samples generally had levels of aflatoxin below the FDA limit. ARTICLE #1 FOR IMMEDIATE RELEASE "Mycotoxins in Pet Food: A Review on Worldwide Prevalence and Prevention Strategi...'Marathon mice' elucidate little-known muscle type
... intense and rapid activities. To fulfill these varied roles, muscles vary in their proportion of "slow-twitch" muscle fibers (types I and IIA), ideal for slow and constant roles, and "fast-twitch" fibers (type IIB), better suited to rapid and sudden activity of shorter duration. The fiber types are defi...USGS examines environmental impacts of aircraft de-icers
...ental health. The sensitivity of tested organisms varied according to a number of factors including formulation of the product. Concentrations of deicer and anti-icer components previously observed in airport effluents have, at times, exceeded the toxicity levels shown in results of this study. Study resu...Environments resilient in the face of hurricanes, but questions remain, says journal special issue
... long-term damage. Damage to shoreline ecosystems varied as well. Dune erosion due to hurricanes was severe in some places but not others. In some parts of coastal Louisiana, large sections of wetlands were lost in extreme storm events. "A major research goal is to use these unique data sets to develop an...Stem cell marker identified in head and neck cancer
...he percent of cells within a tumor expressing CD44 varied from one sample to the next, with one sample composed of as high as 40 percent of these cells. Studies in other cancer types have found the stem cell population to be smaller than 5 percent. "The CD44-positive cells contain the tumorigenic cells, b...Big vegetarian mammals can play a critical role in maintaining healthy ecosystems, study finds
...o found that the strength of the cascading effects varied considerably across the landscape, and that it was possible to predict where the effects would be weak or strong in terms of "primary productivity"-the transformation of solar energy into plant tissue during photosynthesis. Plants in areas of high pr...Cypress replanting unsuccessful without dual cultivation with lavender or mycorrhizal fungi
Morocco possesses a rich and varied flora, owing partly to its great diversity of relief and landscapes. However, advancing erosion and processes of desertification, combined with the development of human activities, are damaging this biodiversity. One of the representative species of ...