opsonin

opsonin definition - medical

op·so·nin (ŏpˈsə-nĭn)

noun
An antibody in blood serum that causes bacteria or other foreign cells to become more susceptible to the action of phagocytes.

The American Heritage® Medical Dictionary Copyright © 2009 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

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