MHC molecules are necessary for antigen presentation and for recognition of antigens by immune system cells. Contrast with benign. Faulty nutrition may result from poor diet, lack of appetite or abnormal absorption of nutrients from the gastrointestinal tract. Also refers to a unique identifier on a cell's surface. See also surrogate marker.
Mast cells release histamine and heparin, chemicals which mediate allergic reactions.
Contrast with median. Contrast with mean. Side effects may include menstrual changes in women, feminizing side effects in men, and swelling of the hands and feet. Menopause may be due to hormonal changes, surgery or drug use. Hormones are released to prepare the uterus for possible implantation.