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Nitroglycerin is used to alleviate various heart-related conditions, and it is also the chief component of dynamite (but mixed in a solid clay base to stabilize it).
Vaccines prevent between 2.5 and 4 million deaths every year.
A seasonal flu vaccine is the best way to reduce the chances you will get seasonal influenza and spread it to others.
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.
When blood is exposed to air, it clots. Heparin allows the blood to come in direct contact with air without clotting.