WASHINGTON (AP) Nearly a century after history's most lethal flu faded away, survivors' bloodstreams still carry super-potent protection against the 1918 virus, demonstrating the remarkable durability of the human immune system.

A naturally occurring protein has been found to keep blood vessels from growing out of control into the light-receptors of the eye and could one day be used as a treatment against some of the leading causes of blindness in the U.S. and other developed nations, researchers report.

Dr. Philip Carter doesn't care that he's a fashion stereotype. As with no-nonsense folks - scholarly and otherwise - functionality is his style rule.

Researchers have cracked the codes that bacteria use to set up colonies, offering a possible new tool against bacterial resistance to disinfectants and antibiotics.