These 85,000 baby teeth were collected in the late 1950s and early 1960s from children in the St Louis area to study the effects of radioactive fallout in the environment.

• 这85,000个婴儿的牙齿是在1950年后期和1960年代初期从圣路易斯的孩子们那里采集到的，用来研究一定的成人下放射性坠尘的影响。