Doctors trying to identify the nature of the immune response to a newly identified pathogen note that every time they isolate the antigen that the immune system is responding to, it is bound to the surface of a cell.This means that the component(s) of the immune system involved could be

Question

Quizplus · Accepted Answer

The fact that the antigen is bound to the surface of a cell suggests that the immune response is mediated by both T cells (which recognize antigens presented on MHC proteins on the surface of cells) and B cells (which produce antibodies that can bind to antigens on the surface of cells). Therefore, the components of the immune system involved are T cell receptors, immunoglobulins (antibodies), and MHC proteins.

Doctors Trying to Identify the Nature of the Immune Response