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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.
Vaccines prevent between 2.5 and 4 million deaths every year.
The people with the highest levels of LDL are Mexican American males and non-Hispanic black females.
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.
The training of an anesthesiologist typically requires four years of college, 4 years of medical school, 1 year of internship, and 3 years of residency.