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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It is important to read food labels and choose foods with low cholesterol and saturated trans fat. You should limit saturated fat to no higher than 6% of daily calories.
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Human stomach acid is strong enough to dissolve small pieces of metal such as razor blades or staples.
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Allergies play a major part in the health of children. The most prevalent childhood allergies are milk, egg, soy, wheat, peanuts, tree nuts, and seafood.
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The FDA recognizes 118 routes of administration.
"Rooster tail" spray around swimming Dall's porpoises
Audiometry. The child in this photograph is undergoing a hearing test with an audiologist.
Exhaust Restriction Test
Mendel’s test cross to verify independent assortment