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If all the neurons in the human body were lined up, they would stretch more than 600 miles.

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In 1835 it was discovered that a disease of silkworms known as muscardine could be transferred from one silkworm to another, and was caused by a fungus.

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About one in five American adults and teenagers have had a genital herpes infection—and most of them don't know it. People with genital herpes have at least twice the risk of becoming infected with HIV if exposed to it than those people who do not have genital herpes.

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All adults should have their cholesterol levels checked once every 5 years. During 2009–2010, 69.4% of Americans age 20 and older reported having their cholesterol checked within the last five years.

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Intradermal injections are somewhat difficult to correctly administer because the skin layers are so thin that it is easy to accidentally punch through to the deeper subcutaneous layer.

Mammalian TLRs: specificities, basic signaling mechanisms, and cellular responses Mammalian TLRs: specificities, basic signaling mechanisms, and cellular responses
Self-administration apparatus Self-administration apparatus
The lacrimal apparatus. The lacrimal apparatus.
Enzymes Enzymes
Cellular Respiration Chart (ATP) Cellular Respiration Chart (ATP)
Common restriction enzymes, with their recognition sequence, DNA cutting patterns, and sources Common restriction enzymes, with their recognition sequence, DNA cutting patterns, and sources
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