Biology Define memory cell Asked by bookragstutor 13 years ago 9/10/2012 1:34 AM Last updated by anonymous 13 years ago 9/10/2012 1:34 AM
A clone of long-lived lymphocytes, formed during the primary immune response, that remains in a lymph node until activated by exposure to the same antigen that triggered its formation. Activated memory cells mount the secondary immune response.