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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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IgA antibodies protect body surfaces exposed to outside foreign substances. IgG antibodies are found in all body fluids. IgM antibodies are the first type of antibody made in response to an infection. IgE antibody levels are often high in people with allergies. IgD antibodies are found in tissues lining the abdomen and chest.

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Russia has the highest death rate from cardiovascular disease followed by the Ukraine, Romania, Hungary, and Poland.

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Methicillin-resistant Staphylococcus aureus or MRSA was discovered in 1961 in the United Kingdom. It if often referred to as a superbug. MRSA infections cause more deaths in the United States every year than AIDS.

Methicilli ...
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In the United States, an estimated 50 million unnecessary antibiotics are prescribed for viral respiratory infections.

Anterior and posterior pituitary glands. Anterior and posterior pituitary glands.
Luna Park at Coney Island was a vast living theater in which strollers were both spectators and acto Luna Park at Coney Island was a vast living theater in which strollers were both spectators and acto
Open pit mining creates immense holes at the surface Open pit mining creates immense holes at the surface
Pediatric Nomogram Used for Determining Body Surface Area Pediatric Nomogram Used for Determining Body Surface Area
Anterior view of the lacrimal apparatus Anterior view of the lacrimal apparatus
A container in the shape of a right circular cylinder with no top has surface area square feet. A container in the shape of a right circular cylinder with no top has surface area square feet.
Video: Green alga life cycle Animation

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