helper T cell helper cell CD4 T cell CD4 cell
helper_t_cell%1:08:00:: helper_cell%1:08:00:: cd4_t_cell%1:08:00:: cd4_cell%1:08:00::
T cell with CD4 receptor that recognizes antigens on the surface of a virus-infected cell and secretes lymphokines that stimulate B cells and killer T cells; helper T cells are infected and killed by the AIDS virus