les nouvelles

The Case of the Shrinking Sheep

While storekeepers were frantically pulling E. coli-tainted cookie dough and beef from their shelves last month, scientists rolled out the country's first cattle vaccine to snuff out the potentially deadly bacteria.

Photos: Mars rover Spirit down but not out

ScienceDaily (July 2, 2009) — A molecule called telomerase, best known for enabling unlimited cell division of stem cells and cancer cells, has a surprising additional role in the expression of genes in an important stem cell regulatory pathway, say researchers at the Stanford University School of Medicine. The unexpected finding may lead to new anticancer therapies and a greater understanding of how adult and embryonic stem cells divide and specialize.

Regenerative medicine group launches in D.C.

LOS ANGELES—Doctors at a Los Angeles-based hospital have injected a heart patient with specialized stem cells grown from his own heart tissue in an attempt to reverse scarring after a heart attack.

Self-confidence is built into our genes, say scientists