Which of the following statements is incorrect or false?
A) Class I MHC molecules are built into the plasma membranes of all body cells.
B) Class II MHC molecules appear only on the surface of antigen-presenting cells, thymic cells, and T cells that have been activated by exposure to antigens.
C) Haptens lack immunogenicity unless attached to protein carriers.
D) MHC proteins are the cell's identity markers.

Question

Quizplus · Accepted Answer

Class II MHC molecules are primarily found on the surface of antigen-presenting cells such as macrophages, dendritic cells, and B cells, not on all T cells or thymic cells. Thymic cells do express MHC molecules, but the statement overgeneralizes their expression and incorrectly includes all T cells.

Which of the Following Statements Is Incorrect or False