Class II MHC molecules are found primarily on
A) macrophages AND erythrocytes.
B) dendritic cells AND erythrocytes.
C) T cytotoxic cells AND dendritic cells.
D) macrophages AND dendritic cells.
E) T cytotoxic cells AND macrophages

Question

Quizplus · Accepted Answer

Class II MHC molecules are found primarily on macrophages and dendritic cells, which are professional antigen-presenting cells involved in activating T cells. Choice A is incorrect as erythrocytes do not express MHC molecules. Choice B and C are incorrect as dendritic cells also express Class II MHC molecules. Choice E is incorrect as T cytotoxic cells do not express Class II MHC molecules.

Class II MHC Molecules Are Found Primarily on