Complement proteins and antibodies coat a microorganism and provide binding sites, enabling macrophages and neutrophils to phagocytize the organism. This phenomenon is termed ________.

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Opsonization is the term used to describe the process by which complement proteins and antibodies coat a microorganism, providing binding sites which enable the phagocytic cells to recognize and ingest the organism. Diapedesis is the movement of leukocytes out of blood vessels and into tissues. Agglutination is the clumping of cells or particles. Chemotaxis is the process whereby cells, such as white blood cells, move toward or away from a particular chemical stimulus.

Complement Proteins and Antibodies Coat a Microorganism and Provide Binding