Alternative sequence (1); Chain (1); Compositional bias (1); Domain (1); Glycosylation (12); Modified residue (1); Motif (1); Natural variant (9); Sequence conflict (1); Signal peptide (1); Topological domain (2); Transmembrane (1); Up-regulated by G-CSF/CSF3 and M-CSF/CSF1 in bone marrow mononuclear cells, hence up-regulation may be linked to differentiation. {ECO:0000269|PubMed:12609765}.; Widely expressed, but very low expression, if any, in the brain (PubMed:12609765, PubMed:16609006). Expressed in the epidermis with higher levels in melanocytes compared with keratinocytes and Langerhans cells (at protein level) (PubMed:29336782). Expressed in peripheral blood, but not bone marrow mononuclear cells (PubMed:12609765). Expressed in tissue macrophages, including liver Kuppfer cells and lung alveolar macrophages, in podocytes and in some cells of the ciliary body of the eye (at protein level) (PubMed:16489096). May be overexpressed in various cancers, including melanoma and glioblastoma multiforme (PubMed:7814155, PubMed:16489096, PubMed:16609006). {ECO:0000269|PubMed:12609765, ECO:0000269|PubMed:16489096, ECO:0000269|PubMed:16609006, ECO:0000269|PubMed:29336782, ECO:0000269|PubMed:7814155}.