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Author Question: A father warns his daughter about premarital sex, but tells his son that he is becoming a real man ... (Read 71 times) |
Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.
Human kidneys will clean about 1 million gallons of blood in an average lifetime.
Earwax has antimicrobial properties that reduce the viability of bacteria and fungus in the human ear.
A cataract is a clouding of the eyes' natural lens. As we age, some clouding of the lens may occur. The first sign of a cataract is usually blurry vision. Although glasses and other visual aids may at first help a person with cataracts, surgery may become inevitable. Cataract surgery is very successful in restoring vision, and it is the most frequently performed surgery in the United States.
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.