The results of a new study suggest that bacteria that cause diseases like bubonic plague and serious gastric illness can turn the genes that make them infectious on or off.
Knowing how disease-causing bacteria, like Yersinia pestis and E. coli, do this may one day help scientists create drugs that control the expression of these genes, thereby making the bacteria harmless, said Vladimir Svetlov, a study co-author and a research associate in microbiology at Ohio State University. The findings appear in the April 13 issue of the journal Molecular Cell.
Remnants from a cave embedded in a limestone quarry southwest of Chicago have yielded a fossil trove that may influence the known history of north central Illinois some 310 million years ago.
"What's really valuable about the cave is the level of preservation of the material," said Fabien Kenig, associate professor of earth and environmental sciences at UIC. "We see charcoal that preserves biological features at the cellular level. Charcoal is an indication of fire burning ancient trees. The cave also beautifully preserved molecular indicators of these fires."
American college students today are civically and politically more engaged than they are commonly given credit for, and more likely to know the name of their elected representatives than the winners of "American Idol", according to the "National Survey of Civic and Political Engagement of Young People" conducted by Tufts University.
"Young people seem to know more about politics than they know about popular culture," said project director and Professor of Political Science Kent E. Portney. "This level of political knowledge stands in stark contrast to the image of young people as uninterested in and ignorant about politics and government."
Experience hearing a person's voice allows us to more easily hear what they are saying. Now research by UC Riverside psychology Professor Lawrence D. Rosenblum and graduate students Rachel M. Miller and Kauyumari Sanchez has shown that experience seeing a person's face also makes it easier to hear them.
Rosenblum’s paper, “Lip-Read Me Now, Hear Me Better Later: Crossmodal Transfer of Talker Familiarity Effects,” will appear in the May issue of the journal Psychological Science.
People who inherit two mutant copies of any one of about 12 genes that make the proteins of the Fanconi Anemia (FA) pathway develop FA, which is characterized by increased incidence of cancer and bone marrow failure, among other things.
However, individuals with just a single mutant copy of one of these genes are also at increased risk of developing cancer. This occurs when the remaining "good" copy of the gene becomes mutated in a specific cell type, allowing that cell type to form a tumor.
A study funded by the Atlanta-based Center for Behavioral Neuroscience (CBN) analyzed the viewing patterns of men and women looking at sexual photographs, and the result was not what one typically might expect.
Researchers hypothesized women would look at faces and men at genitals, but, surprisingly, they found men are more likely than women to first look at a woman's face before other parts of the body, and women focused longer on photographs of men performing sexual acts with women than did the males. These types of results could play a key role in helping researchers to understand human sexual desires and its ultimate effect on public health.