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phagocytosis occurring when a culture of bacteria is brought in contact with washed leukocytes in an indifferent medium, such as a physiologic salt solution.
Etymology: L, sponte, free will; Gk, phagein, to eat, kytos, cell, osis, condition
ingestion of antigenic particles by phagocytes of the reticuloendothelial system.
Phagocytosis that occurs in the absence of opsonins.
See also: phagocytosis