induction:Down-regulated by dexamethasone (in vitro).,similarity:Belongs to the immunoglobulin superfamily. CEA family.,tissue specificity:Ubiquitous with highest expression in prostate, uterus, fetal brain, mammary gland, adrenal gland, skeletal muscle, small intestine, and kidney, and lower expression in lung, cerebellum, testis, liver, pancreas, bone marrow and ovary.,