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Health & MedicineDNA vaccine immunizes fetal lambs
Canadian scientists have devised a way to vaccinate fetal lambs, which could spawn more research into in utero methods for preventing the spread of disease from mothers to their babies.
By Nathan Seppa -
AnimalsSlavemaker Ants: Misunderstood Farmers?
A test of what once seemed too obvious to test—whether ant colonies suffer after being raided by slavemaker ants—suggests that some of the raiding insects have been getting unfair press.
By Susan Milius -
Colossal Colon Tour
The Colossal Colon is a 40-foot-long, 4-foot-high replica of a human colon. Visitors can crawl through the colon or look through the viewing windows to see healthy colon tissue, colon disease, polyps, and various stages of colon cancer.