ANTHRO 3560 Study Guide - Midterm Guide: B Cell, Zoonosis, Cowpox

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Antibiotic: a substance produced by micro-organisms that can inhibit or kill susceptible. Antibody: blood protein produced in response to a foreign antigen that can inactivate certain microbes infectious agents in the body. Antigen: a foreign substance, usually a protein, that is capable of inducing an immune response. Antigenic drift: slow accumulation of mutations in the genome of a virus such as flu virus that eventually allows it to overcome the immune response generated against its parent virus. Antigenic shift: major genetic change in a viral genome, such as a flu virus, resulting from gene reassortment and possibly generating a pandemic strain. Bacteria: a simple, prokaryotic micro-organism in the domain bacteria. Carrier state: continued presence of an organism in the body that doesn"t cause symptoms, but is able to be transmitted and infect other persons. Chronic infectious disease: a long-lasting disease that can be passed on.