chromatographic assay of arabinosylpurines in the media provided evidence that adenine arabinoside was rapidly deaminated to 9-beta-d-arabinofuranosylhypoxanthine by the cellular monolayers , in the absence of animal serum , and that the rate of deamination , at 5 mug/ml , by the cells was equal to the rate of diffusion of ara-a across the cellular membrane .
C0007634
cells
C0007603
cellular membrane