Cell-mediated immunity to herpes simplex virus type 2 was investigated in infected inbred strain 13/N guinea pigs with (45%), and without, a history of recurrent herpetic disease (A. D. Donnenberg, E. Chaikof, and L. Aurelian, Infect. Immun. 30:99-109, 1980). Induction of suppressor cells capable of reducing the proliferative response of herpes simplex virus type 2-stimulated immune lymphoid ce...