In some bacteria, the capsule covers the opsonin C3b bound to the bacterial cell wall so that it cannot bind to C3b receptors (called CR1) on the surface of phagocytes.
Illustration of A Bacterial
Capsule Preventing C3b Receptors on Phagocytes from Binding to C3b Attached
to a Bacterial Cell Wall.jpg by Gary E. Kaiser, Ph.D.
Professor of Microbiology, The Community College of Baltimore County, Catonsville Campus
This work is licensed under a Creative Commons Attribution 4.0 International License.
Based on a work at http://faculty.ccbcmd.edu/~gkaiser/index.html.
Last updated: August, 2018
Please send comments and inquiries to Dr. Gary Kaiser