phagocytosis(redirected from phagocytism)
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See also: endocytosis.
phagocytosis/phago·cy·to·sis/ (-si-to´sis) the engulfing of microorganisms or other cells and foreign particles by phagocytes.phagocytot´ic
See also: endocytosis
phagocytosis(fag?o-si-to'sis) [? + ? + osis, condition]
Most bacteria are killed during phagocytosis by oxygen radicals, which are formed during the respiratory burst when phagosomes and lysosomes merge. When oxygen radical production is excessive, tissue damage occurs. Lysozymes, defensins, and bacteriocidal permeability-increasing (BPI) protein also destroy bacteria and other organisms; their actions do not depend on the generation of oxygen radicals.