1.auttaja-T-solu, jonka CD4-reseptori tunnistaa infektoituneen solun antigeeneja ja joka stimuloi muiden immuunisolujen toimintaa
1.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