The proteins attract human stem cells to migrate to the limb area and start creating skeletal muscle cells.
Researchers in Australia showed that a class of compounds called nitric oxide donors delays the entry of toxins from potentially deadly snakebites.
Temperature-sensitive fibers change color in the presence of heat generated by infections or inflammation.
Normally horses' immune systems keep the virus at bay, but stress and an increase in contact may break down defenses.
Nearly 30 million people have been killed by AIDS and more than 33 million have the virus that causes it.
In the future, a computer virus may be wiped out in much the same fashion that humans overcome a cold.
Maggots, leeches and intestinal worms may be effective treatments in the fight against everything from irritable bowel disease to allergies.
At least one species of bat could go extinct in the United States within the next 20 years as white-nose syndrome spreads.
The discovery is a major breakthrough that could prevent millions of people from being infected with the life-threatening disease.
The common symptoms of allergies may be generated by a defense the body developed to fight off parasites.