title: Porcine relaxin, a 500 million-year-old hormone?
mesh_terms: D000818:Animals; D019143:Evolution, Molecular; D016133:Polymerase Chain Reaction; D012333:RNA, Messenger / Q000737:chemistry / Q000235:genetics; D012065:Relaxin / Q000737:chemistry / Q000235:genetics*; D017421:Sequence Analysis; D013552:Swine
chemical_list: D012333:RNA, Messenger; D012065:Relaxin