Which statement is not true about MHC II?
When bound to antigen, MHC II serves a key role in activation of the appropriate T cells.
MHC II interacts with the CD4 receptor on T helper cells.
MHC II primarily displays extracellular antigens which have been phagocytized.
MHC II is present only on antigen-presenting cells.
MHC II interacts with both the CD4 and CD8 receptors on T helper and T cytotoxic cells.
MHC II interacts with both the CD4 and CD8 receptors on T helper and T cytotoxic cells.
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