Urine turns bright yellow if larger than normal amounts of certain substances are consumed; one of these substances is asparagus.
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The heart is located in the center of the chest, with part of it tipped slightly so that it taps against the left side of the chest.
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Egg cells are about the size of a grain of sand. They are formed inside of a female's ovaries before she is even born.
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In ancient Rome, many of the richer people in the population had lead-induced gout. The reason for this is unclear. Lead poisoning has also been linked to madness.
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Autoimmune diseases occur when the immune system destroys its own healthy tissues. When this occurs, white blood cells cannot distinguish between pathogens and normal cells.
Glaucoma. (a) A buildup of pressure within the eye cavities, often caused by a blockage of vessels t
Immunization Schedule
Recommended childhood and adolescent immunization schedule, 2009.
Photos simulating vision with two common visual disorders