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Author Question: Although both calcium and iron needs increase during childhood, there is also a recommendation that ... (Read 42 times) |
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After a vasectomy, it takes about 12 ejaculations to clear out sperm that were already beyond the blocked area.
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Sperm cells are so tiny that 400 to 500 million (400,000,000–500,000,000) of them fit onto 1 tsp.
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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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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.
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Blood in the urine can be a sign of a kidney stone, glomerulonephritis, or other kidney problems.