title: Serum alkaline ribonuclease activity during pregnancy.
mesh_terms: D005260:Female; D006801:Humans; D006863:Hydrogen-Ion Concentration; D007743:Labor, Obstetric; D008297:Male; D008598:Menstruation; D011247:Pregnancy; D011248:Pregnancy Complications / Q000201:enzymology; D012260:Ribonucleases / Q000097:blood*; D013056:Spectrophotometry, Ultraviolet; D013997:Time Factors
chemical_list: D012260:Ribonucleases