A study of relaxin in primigravidas.
D005260:Female; D020073:Gravidity; D006801:Humans; D007743:Labor, Obstetric / Q000502:physiology*; D011247:Pregnancy; D012065:Relaxin / Q000494:pharmacology*; D014937:Work
D012065:Relaxin
LABOR/physiology; RELAXIN/pharmacology