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A Pill with a Purpose

A team of astronomers from the California Institute of Technology, led by S. George Djorgovski, may have glimpsed the dawn of our universe. In Aug. 2001, this team reported that it had spotted the “…

pregnancy

(Encyclopedia) pregnancy, period of time between fertilization of the ovum (conception) and birth, during which mammals carry their developing young in the uterus (see embryo). The average duration…

Medical Advances Timeline

Find key developments in the field of medicine, from the birth of Hippocrates to today. 460 BCE Birth of Hippocrates, Greek physician and founder of the first university. Considered the father…

infertility

(Encyclopedia) infertility, inability to conceive or carry a child to delivery. The term is usually limited to situations where the couple has had intercourse regularly for one year without using…

reproductive system

(Encyclopedia) CE5 Reproductive system reproductive system, in animals, the anatomical organs concerned with production of offspring. In humans and other mammals the female reproductive system…

stem cells

(Encyclopedia) stem cells, unspecialized human or animal cells that can produce mature specialized body cells and at the same time replicate themselves. Embryonic stem cells are derived from a…