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.
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The first documented use of surgical anesthesia in the United States was in Connecticut in 1844.
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The B-complex vitamins and vitamin C are not stored in the body and must be replaced each day.
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Approximately 500,000 babies are born each year in the United States to teenage mothers.
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Approximately one in four people diagnosed with diabetes will develop foot problems. Of these, about one-third will require lower extremity amputation.
The dorsal (red) and ventral (blue) body cavities.
Small intestine.
Complementary fit between a macromolecule and a small molecule
Types of tissue in the human body.
A cutaway of a small block Chevrolet V-8 showing the passage from the cylinder head through the ...