A mitogen is a chemical, usually some form of a protein that encourages a cell to commence Mitosis, triggering plasma B cells can enter mitosis when they encounter an antigen matching their immunoglobulin.
A mitogen is a chemical, usually some form of a protein. This protein encourages a cell to commence Mitosis. A chemical is triggering plasma. B cells can enter mitosis. They encounter an antigen. This antigen is matching their immunoglobulin plasma.