Question: what are the two main types of lymphocytes quizlet?
Answer: T cells. thymus dependent circulating lymphocytes, make up 80% of circulating lymphocytes. B cells. bone marrow-derived circulating lymphocytes, make up 10-15% of circulating lymphocytes. NK cells. ...  cytotoxic T cells. ...  helper T cells. ...  suppressor T cells. ...  memory T cells. ...  plasma cells.