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Many of the drugs used by neuroscientists are derived from toxic plants and venomous animals (such as snakes, spiders, snails, and puffer fish).
In the United States, an estimated 50 million unnecessary antibiotics are prescribed for viral respiratory infections.
In most cases, kidneys can recover from almost complete loss of function, such as in acute kidney (renal) failure.
IgA antibodies protect body surfaces exposed to outside foreign substances. IgG antibodies are found in all body fluids. IgM antibodies are the first type of antibody made in response to an infection. IgE antibody levels are often high in people with allergies. IgD antibodies are found in tissues lining the abdomen and chest.
This year, an estimated 1.4 million Americans will have a new or recurrent heart attack.