<prompt> All of the following are functions of CD4 helper cells EXCEPT: September 2012Immunogenic memoryProduce immunoglobulinsActivate macrophageActivate cytotoxic cells  <response>: Ans. B i.e. Produce iinmunoglobulins B cells divide and transforms into plasma cells which synthesize immunoglobulin. T cells produce activation products lymphokine and induce cell mediated response 