The process by which a neutrophil squeezes between the cells of the endothelium to leave a blood vessel and enter tissue is called

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Diapedesis, also known as extravasation, is the process where neutrophils move out of blood vessels and enter tissues by squeezing between the cells of the endothelium. Chemotaxis is the movement of neutrophils towards a chemical signal. Opsonization is the process where a pathogen is coated with antibodies or complement proteins to facilitate its recognition by phagocytes. Phagocytosis is the process where a cell engulfs and digests a particle or cell, in this case, the neutrophils engulfing pathogens.

The Process by Which a Neutrophil Squeezes Between the Cells