In studies involving the human breast cancer cell line MCF 7, and in oophorectomized mice, dong quai and ginseng have been shown to induce the growth of MCF 7 cells by 16 and 27 fold, respectively, over that of untreated control cells proscar without a prescription The constant domains are not involved directly in binding an antibody to an antigen, but exhibit various effector functions, such as participation of the antibody in antibody dependent cellular cytotoxicity ADCC