This posting has a flow chart that outlines the immune response that occurs when a pathogen enters the body.© BrainMass Inc. brainmass.com October 9, 2019, 7:04 pm ad1c9bdddf
***See the attached file***
A pathogen enters the body
The pathogen is ingested by a macrophage When a B cell encounters free antigen in the
and pieces of the pathogen's proteins are blood, it is activated only if it recognizes that
presented on the surface of the macrophage. antigen.
If a helper T cell recognizes the
antigen bound to the surface of
the B cell, it stimulates the cell to divide.
Killer T cells recognize Helper T cells recognize
the antigen on the the antigen on the
surface of the macrophage surface of the macrophage
and become activated. and ...
This posting has a flow chart that outlines the immune response that occurs when a pathogen enters the body.