title: A technique for serial sampling of umbilical artery blood at birth.
mesh_terms: D001784:Blood Gas Analysis; D001800:Blood Specimen Collection; D002245:Carbon Dioxide / Q000097:blood; D006801:Humans; D006863:Hydrogen-Ion Concentration; D007231:Infant, Newborn; D008722:Methods; D010100:Oxygen / Q000097:blood; D012119:Respiration; D013997:Time Factors; D014469:Umbilical Arteries
chemical_list: D002245:Carbon Dioxide; D010100:Oxygen