Examlex
A _____ is composed of means based on samples rather than raw scores.
Antigen
A substance that, when introduced into the body, causes an immune response, often involving the production of antibodies.
Lymphocytes
Granular leukocytes formed in lymphoid tissue. Lymphocytes are generally small. See T Lymphocyte and B Lymphocyte.
Interferon
A protein that blocks viruses from infecting cells.
Chemical Barrier
A defense mechanism in the body that uses chemicals (such as acids or enzymes) to protect against pathogens and foreign substances.
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