the proliferation of suppressor-t-cell clones to m. leprae antigens could be blocked by monoclonal antibodies to hla-dr , alpha beta t-cell receptor , interleukin-2 receptor , and , in the case of cd4-positive suppressor-t-cell clones , anti-cd4 monoclonal antibodies .
C0019764
hla-dr
C0039215
cd4-positive