[Potassium diffusion potentials in fetal erythrocytes and leukocytes in umbilical cord blood].

The potential of the membrane erythrocytes and leucocytes from the fetal umbilical cord blood was studied in order to determine the vitality of cells. The membrane erythrocytes potential was analysed in 11 blood samples of normal deliveries and 3 blood samples of deliveries with the meconium amniotic fluid; the membrane leucocyte potential was examined in 16 blood samples of normal deliveries and 5 blood samples of deliveries with the meconium amniotic fluid. The method used was the indirect fluorescence spectroscopy and the cyanin dye DIO-C5-(3) as the extrinsic fluorescent probe.