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Did you know?

Malaria was not eliminated in the United States until 1951. The term eliminated means that no new cases arise in a country for 3 years.

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Although puberty usually occurs in the early teenage years, the world's youngest parents were two Chinese children who had their first baby when they were 8 and 9 years of age.

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The first-known contraceptive was crocodile dung, used in Egypt in 2000 BC. Condoms were also reportedly used, made of animal bladders or intestines.

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The training of an anesthesiologist typically requires four years of college, 4 years of medical school, 1 year of internship, and 3 years of residency.

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Oliver Wendell Holmes is credited with introducing the words "anesthesia" and "anesthetic" into the English language in 1846.

Polycystic ovary syndrome. Polycystic ovary syndrome.
Down Syndrome Features Down Syndrome Features
The relationship between maternal age and the frequency of trisomy 21 (Down syndrome). The risk incr The relationship between maternal age and the frequency of trisomy 21 (Down syndrome). The risk incr
The regions of the human X chromosome distinguished by its banding pattern The regions of the human X chromosome distinguished by its banding pattern
Chromosome Number in Selected Animal Species Chromosome Number in Selected Animal Species
Bacterial chromosome and plasmids Bacterial chromosome and plasmids
Video: Angiotensin II - kidneys, adrenal glands and dehydration

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