A wide overview of the immune system, presented by HHMI investigators John W. Kappler, PhD, and Philippa Marrack, PhD
The human body has at least a trillion ways of recognizing that something foreign has invaded.
The immune system recognizes invaders in a complex way.
Normally the trillions of lymphocytes in the human body do not attack their host.
Some organisms have evolved ways of evading or subverting the body's defenses.
This virtual lab teaches the procedures of performing an ELISA test to determine whether a particular antibody is present in a patient's blood sample.