Study turns parasite invasion theory on its head

Current thinking on how the Toxoplasma gondii parasite invades its host is incorrect, according to a study published today in Nature Methods describing a new technique to knock out genes. The findings could have implications ...

Wolf mange part of nature's cycle

Mange and viral diseases have a substantial, recurring impact on the health and size of reintroduced wolf packs living in Yellowstone National Park, according to ecologists.

Biologists tag 'zombees' to track their flight

After last year's accidental discovery of "zombie"-like bees infected with a fly parasite, SF State researchers are conducting an elaborate experiment to learn more about the plight of the honey bees.

Chimps self-medicate under human pressure

Chimpanzees living in small fragments of forest close by people and farm animals are turning in increasing numbers to natural remedies in an effort to deal with their stressful and disease-prone existence, a new study suggests.

Treating poultry diseases without antibiotics

Identifying antimicrobial proteins in chickens that kill pathogens is one method being used by U.S. Department of Agriculture (USDA) scientists to find alternatives to the use of antibiotics to control infectious poultry ...

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