TISSUE SPECIFICITY: Expressed in white adipose tissue (at protein level) (PubMed:11201732). Widely expressed, with particularly strong expression in lung, bone marrow, breast and peripheral blood (PubMed:15248836). Expressed strongly in bone marrow and at lower levels in lung, but not detected in other tissues (PubMed:15064728). Isoform 2 is detected in adipose tissue, bone marrow, brain, lung, peripheral blood, placenta and thymus
