The Activation of Helper T Cells Is Likely

Multiple Choice

The activation of helper T cells is likely

A) when an antigen is displayed by a dendritic cell.
B) when a cytotoxic T cell releases cytokines.
C) when natural killer (NK) cells come in contact with a tumour cell.
D) in the bone marrow during the self-tolerance test.
E) when B cells respond to T-independent antigens.