A Helper T Cell Response to a Protein Antigen Requires

Multiple Choice

A helper T cell response to a protein antigen requires the participation of antigen-presenting cells that express which of the following types of molecules?

A) Class II MHC and costimulators
B) Class I MHC and CD4
C) Class II MHC and CD8
D) CD4 and costimulators
E) Class II MHC and CD4