placental cord blood bank donor blood unit

placental blood bank laboratory chroniloshche refrigerator liquid nitrogen sample hands gloves preparation cryochamber hood placenta umbilical cord man motherhood medical pregnancy pregnant fetus histology biology childbirth chorionic health healthcare medicine membrane microscope obstetrics micrograph red science villi tissue cross third trimester consequence background cell chorioamnionitis diabetes histological binding late core pathology preeclampsia to study size weight