A transplant recipient's body rejects a transplanted organ because her ______ does not match that of the donor closely enough.
A) major histocompatibility complex
B) mononuclear phagocytic system
C) cytokine profile
D) antibody response

Question

Quizplus · Accepted Answer

The major histocompatibility complex (MHC), also known as human leukocyte antigen (HLA) in humans, plays a key role in the immune system's ability to distinguish "self" from "non-self." The recipient's immune system recognizes the donor organ as foreign if the MHC molecules on the donor cells are too different from the recipient's own MHC molecules, leading to rejection of the transplanted organ.

A Transplant Recipient's Body Rejects a Transplanted Organ Because Her