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A constituent of the blood, usually a specific antibody, that is, opsonin, that combines with bacterial cells and renders them more susceptible to phagocytes.
Farlex Partner Medical Dictionary © Farlex 2012
bacteriotropin(băk-tē″rē-ŏt′rō-pĭn) [″ + tropos, a turn]
An opsonin or a substance that enhances the ability of phagocytes to engulf bacteria.
Medical Dictionary, © 2009 Farlex and Partners