Active Immunity - immunity that is acquired by activation of immune system, antibiotics - molecules produced by microorganisms that kill or limit the growth of other microorganisms, antibodies - protein molecules released by the immune system in response to an antigen, antigen - a foreign molecule which can provoke an immune response, artificial immunity - immunity acquired as a result of deliberate exposure to antigens , atherosclerosis - the deposition of fatty substances in the lining of the artery, cholesterol - a lipid molecule found in all cell membranes, clonal expansion - the division of selected cells by mitosis to increase their numbers, clonal selection - the selection of cells with a specific receptor site., epidemic - describes a disease that spreads to many people quickly and affects a large proportion of the population, epidemiology - the study of patterns of disease and the factors that influence their spread, fermenter - a vessel to grow microorganisms in large numbers, immunological memory - ability of the immune system to respond very quickly to antigens as it recognises the antigens as they have entered the body before, interleukin - cell-signalling chemicals involved in activating cells of the immune system, leucocytes - white blood cells, macrophages - large phagocytic white blood cells that engulf, ingest and digest bacteria, natural immunity - immunity acquired through exposure to disease during the normal course of life, pandemic - describes a disease that is spreading worldwide or over continents, pathogen - an organism that causes disease, phagocyte - a cell that can carry out phagocytosis and ingest bacteria or small particles, primary defence - the defences that stop bacteria entering the body e.g skin, receptor site - protein or glycoprotein molecules onc ell surfaces that attach to specific substances like hormones or viruses, secondary defence - defence that attempts to kill the pathogen e.g. phagocytes, vector - an organism that carries a pathogen from one host to another, vitamin - a chemical needed in small amounts or healthy metabolism, obesity - when a person is 20% or more heavier than their recommended weight, selective breeding - humans select the individual organisms that are allowed to breed according to characteristics, parasite - an organism that lives in or on another organism,

F212.2 keywords match-up

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