title: Proinsulin: the precursor of insulin.
mesh_terms: D000595:Amino Acid Sequence; D000818:Animals; D006801:Humans; D007328:Insulin / Q000096:biosynthesis* / Q000097:blood / Q000302:isolation & purification; D007515:Islets of Langerhans / Q000378:metabolism; D011863:Radioimmunoassay
chemical_list: D007328:Insulin