<prompt> Apart from T B lymphocytes, the other class of lymphocytes is -MacrophagesAstrocytesNK cellsLangerhans cells  <response>: Lymphoid cellsThe cells of the lymphoid system are lymphocytes.On the basis of function and surface markers, there are two major types of lymphocytes-T- cellsB- cellsWhen circulating lymphocytes are classified by their surface markers into T and B cells, about 5-10 percent of cells are found to lack features of either type they are called null cellsLarge granular lymphocytes.Large granular lymphocytes include: - Natural killer cells N.K Cells - Antibody-dependent cytotoxic cellskiller cells ADCC. - Lymphokine-activated killer cells LAK cells. 