Umbilical arterial pH and the isolation of exosomes
UEs
6 mL of blood samples were obtained from the umbilical artery at 5 min after delivery. One portion of each sample was analyzed for pH. UEs were isolated from another portion of umbilical cord sample using ExoQuick exosome precipitation solution (System Biosciences, Palo Alto, CA, USA), a commercially available kit that gently precipitates exosomes ranging in size from 30 and 200 nm [