Safety of bismuth bullets questioned: Study
...irds as part of their traditional diet. Bismuth behaves in a ballistically similar way to lead and is cheaper than steel shot, making it the preferred alternative. But the researchers found what they believe are analytical errors in the original studies that justified the switch to bismuth as a non-toxic ...Researchers discover defense mechanisms in some plants believed bred out by humans
...F aggregate is involved in defense, Esen said, and behaves much like a football team that surrounds the ball carrier and keeps him from moving. The researchers' project is to understand the interaction between beta-glucosidase and BGAF--how they recognize each other and bind so tightly. Thus far, they ...'Jumping gene' helps explain immune system's abilities
...y the process behind antigen recognition. "Hermes behaves more like the process used by the immune system to recognize a million different proteins, called antigens, than any previously studied jumping gene," says Nancy Craig, Ph.D., professor of molecular biology and genetics in Johns Hopkins' Institute fo...Physicists discover temperature key to avalanche movement
...rio Loreto, have shown that shaken granular matter behaves in a way related to Einstein's theory of Brownian motion, first published in 1905. The temperature of an object reflects the random motion of its constituent parts. For instance, the faster the molecules in a gas or liquid are moving around the high...Yeast finding links processes in heart disease and cancer
...-producing genes, aided by a gene called scp1 that behaves like SCAP. As in humans, sre1 somehow gets turned on when cholesterol levels are low, increasing the cell's production of cholesterol. As cholesterol builds up in the cell, sre1 is gradually turned off. "Essentially, SREBP and sre1 both try to mainta...A new way to share models of biological systems
...build computer models of them. If a computer model behaves differently than the real organism, we know that we've neglected an important component of the system. Quantitative models can also reveal previously unappreciated properties of complex systems, paving the way towards new drug treatments. This approa...'Molecular zipper' may hold important clues to Alzheimer's, Parkinson's and mad cow disease
... piece of a fibril-forming protein from yeast that behaves similarly to proteins involved in Alzheimer's and these other diseases. Knowledge of the structure of this small peptide -- known by the code of its amino acids, GNNQQNY -- reveals a surprising "molecular zipper" that Eisenberg described as "patholog...Positive effects of nuclear medicine, 'smart drugs' provide hope for non-hodgkin's lymphoma patients
...Wahl. "We can adjust the dose, depending on how it behaves in a person," he added, saying, "Nuclear medicine has a clear effect on lymphoma." The current standard course of treatment for lymphoma is intensive chemotherapy. Patients receive chemotherapy every three weeks over a time period of up to six month...Trees, vines and nets microbial evolution changes its face
...f vines coursing through the tree's branches. This behaves in a 'scale-free' manner, a term used to describe networks that have an uneven distribution of connectivity and a small number of hubs that are far more connected than other nodes. One property of scale-free networks is their 'small-world' nature: t...UNC scientists discover new role for protein as fundamental inhibitor of cell movement
... in humans is that the protein has a relative that behaves in a very similar multifunctional fashion: calmodulin. This was one of the first regulatory proteins ever discovered. "CIB1 is very similar to the protein calmodulin, which binds to a host of other proteins and regulates numerous cell functions, th...... salt content is concerned, Natronomonas pharaonis behaves like closely related organisms - for example, Halobacterium salinarum, the "house pet" of Dieter Oesterhelt's department. In contrast to other salt-tolerant organisms, halophile archaea have an extremely high salt concentration inside of their cells....Stanford scientists' discovery of hormone offers hope for obesity drug
...ame sequence have such opposite effects: Obestatin behaves in some ways as the "anti-ghrelin." "That was a big surprise," said Hsueh. The identification of obestatin occurred as part of the researchers' study of a specific category of hormones-relatively small protein molecules called peptide hormones. These......particles in axons. In other words, a single motor behaves much like a sprinter, whereas the whole cargo performs a marathon. Scientists of the Max Planck Institute of Colloids and Interfaces in Potsdam have now provided a simple solution to this puzzle. If the cargo is pulled by several motors as shown in ...Genetic defenders protect crops from fungal disease
...ists. However, very little is known about how PEN2 behaves in the cell. The current study demonstrates that the PEN2 protein is a catabolic enzyme--a protein that breaks down other molecules--though its specific target remains unknown. The study expands on the researchers' previous work with a gene called P...Engineers discover why toucan beaks are models of lightweight strength
...ur finding that the beak's sandwich structure also behaves as a high energy impact-absorption system," said Meyers. "Panels that mimic toucan beaks may offer better protection to motorists involved in crashes." Toucans are highly social, noisy residents of rainforests in the Amazon, although the birds live ...USC scientists link variations in growth-factor gene to risk of prostate cancer
..., "suggesting that the inherited variation in IFG1 behaves similarly among ancestral groups and shares an overall biologic effect," the researchers observed. "Our study critically evaluates the possibility of false positive results, and important issue faced by genetic association studies, and provides stron...Molecular force field helps cancer cells defend against attack
...can characterize their tumor and understand why it behaves like it does, the greater chance we'll then be able to go back to the patient with therapeutics, and that laboratory bench to bedside is what our research is all about." H. Shelton Earp III, M.D., director of the Lineberger Comprehensive Cancer Cente...New cell imaging method identifies aggressive cancer cells early
...roteins in their new locations change how the cell behaves and participate in the promotion of cancer, she said. Being able to measure the protein location shifts to aid in determining their function in cancer cell development will allow scientists to use the proteins as treatment targets. "With our new syst...Radar altimetry revolutionises the study of the ocean
...s most outstanding achievement. Ocean forecasting behaves much the same as weather forecasting: if there is high pressure (signified by higher sea levels), an anticyclonic ocean circulation takes place, which usually translates into good weather conditions, while low pressure (signified by lower sea levels)......rturing can elicit a change in how a specific gene behaves but without altering the genetic sequence in any way. Rather, the exposure or event prompts a quartet of atoms or "methyl group" to attach to the regulatory region of a gene, where it acts as a switch to activate or silence the gene. Such an effect ...