Molecule offers insights into fertilization
...wer the question of whether sperm can be caused to behave in a way that increases the likelihood of successful fertilization," Zimmer said. "We have developed techniques to track sperm cells -- their speed and direction -- with respect to the egg. We can follow what sperm do in the presence of an egg, and s...Study evaluates biology of prostate cancer progression in African-American men
...Prostate cancer in African American men appears to behave aggressively, and that could be due to differences in the cancer's behavior and gene expression, or to delays in seeking treatment," says Curtis Pettaway, M. D., an associate professor in the Department of Urology and Cancer Biology. The study was ...Scientists break down patterns in nature
...t abundances of pairs of species in terminal twigs behave in a very special way. "Just like two pieces of rock that once belonged together," Pimm says. "Take a rock and split it into two pieces. On average, the bigger piece will be three-quarters of the rock, the smaller a quarter of the rock. If you take a...Cloned pigs differ from originals in looks and behavior
...he implication is that your cloned pet is going to behave and look like the one you already have and that w...mogeneous, so you cannot expect your cloned pet to behave like your original pet, even discounting environment. We've cloned animals that were raised in the s...What makes the body absorb too much iron?
...r model, cells with defective Hfe were expected to behave like healthy mice with an iron deficiency they ought to produce more iron-absorbing proteins in the intestine. That wasn't the case. So the researchers started to look farther afield for other effects of mutant Hfe. They discovered something intrigu...Stanford researchers isolate protein needed for stem cell maintenance
...he Wnts are unusual, however, because the way they behave in the lab differs from what the gene suggests. Roeland Nusse, PhD, professor of developmental biology at the School of Medicine and one of the first to isolate a Wnt (pronounced "wint") gene, reports how his lab members overcame these hurdles in the...Controlling cell adhesion: Researchers report first evidence of 'catch bonds'
...id. "Once you get past a certain point, the bonds behave like you would expect when you apply a larger for...e want to understand what makes these interactions behave as catch bonds." In addition to the researchers already mentioned, the team included Mian Long and ...Undergraduate students physics research earns trip to international conference
...test a specific theory of how the particles should behave and discover that theory's limits." Reid's main contributions were writing and performing the simulations, doing detailed data analysis and interpretation, and developing an intermediary model to explain the group's results. Tuber said Reid is "defin...Purdue genetic discovery may aid plants and human medicine
... normal, or "wild type," plants. Apparently plants behave differently in accordance with how a growth hormone moves through them. Because the two genes affecting transport of the hormone are related to human genes that impact the effectiveness of chemotherapy drugs, controlling these genes may allow physici...New opportunities for accelerating the conquest of human cancer
...dimensional cellular models of cultured cells that behave like their counterparts in normal biological systems. New animal models of human cancer, using transgenic zebrafish created in Dr. Look's lab at the Dana Farber Cancer Center, are helping to identify genes that block and promote the carcinogenic pro...New research challenges prevailing theory of microbial biodiversity
...of pathogen that emerged in the United States will behave the same way, the researchers said....Monitoring malaria: Genomic activity of the parasite in human blood cells
...dented for a free living organism. Virus and phage behave like a "just in time" assembly line: components are made only as needed, and only in the amount that is needed. In this respect, malaria resembles a glorified virus. Given the remarkable coupling of the timing of gene activation with gene function...New study begins to unravel fate of toxic pollutants harbored in Arctic waters
... quickly. "The main message is that pollutants can behave quite differently," Grannas said. "These pollutants already affect local ecosystems, and could have repercussions for human health."......eam will test the hypothesis that such collections behave as discrete "functional modules," each of which performs a specific function essential to an organism's survival and reproduction. "The notion that functional modules at the molecular and cellular levels represent a fundamental organizing principle a...Some forms of cancer behave in an unexpected way
...e, BRCA1, had unusual tumors. These tumors did not behave as expected - there was no clear correlation betwe...ndicated that BRCA1-related breast cancers tend to behave aggressively. Thus, the preferred route of spread of BRCA1-related breast cancers may be different f...A test for sensitivity of normal tissue to radiation damage?
...g us different to one another and with bodies that behave in different ways to external challenges such as radiotherapy. Dr Andreassen, a research fellow at the Department of Experimental Clinical Oncology at Aarhus University Hospital, Denmark, found that in 41 women treated with radiotherapy after a maste...Real-time 'movies' will predict wildfire behavior for one hour
...ger will use to watch how the fire is predicted to behave for about an hour. "The idea is that all of this will occur as close as possible to real time," Vodacek says. "By the time it takes to collect the data, run it through the model and send it back to the field, it may be 15 minutes old. But, still, tha...Case Western Reserve University scientists test protein as early cancer detection agent
...veland. According to the study, clusterin should behave in blood as it does in cells examined in the laboratory. The team observed clusterin levels rise in response to the presence of cancer. Researchers said this rise would indicate that if a baseline clusterin level was established for a healthy person,...White House awards National Medal of Science to Rockefeller University's James Darnell
...called Stat3 can, by itself, cause normal cells to behave like cancer cells. Scientists previously knew that Stat3 was often activated in various human cancer types, including lymphomas, leukemias, breast cancer and a high percentage of head and neck cancers, but Darnell and his colleagues showed for the fi...Major new finding on genetics of Parkinson's disease zeroes in on activity of alpha synuclein
...inson's disease both mutated and normal -synuclein behave in a way that is quantitatively different from the way the protein functions in people without Parkinson's disease." The researchers point out that the findings in the Science report are relevant to both familial and sporadic, or typical, Parkinso...