Glossary A
Glossary A
Antigen refers to foreign material that enters the body, including bacteria and parasites.
Antigens refer to the unique proteins found on the surface of bacteria; these proteins are what enable the immune system to recognize the bacteria as foreign substances.
Antihistamines refer to common over-the-counter drugs with decongestant effects; drugs that counter the effects of histamine, a compound that causes dilatation of capillaries, contraction of smooth muscle, and stimulation of gastric acid secretion and that is released during allergic reactions.
Antioxidants refer to agents that inhibit or neutralize potentially harmful compounds known as free radicals. Free radicals are produced during metabolic activity. High levels of free radicals may eventually lead to impaired functioning and destruction of neurons and other bodily cells. Certain antioxidants are thought to neutralize free radicals before cellular damage occurs.
Antipsychotic drugs refer to drugs used to control severe psychotic symptoms, such as the delusions and hallucinations of schizophrenics; also known as neuroleptics or major tranquilizers.