6-mercapto-9- ( beta-d-ribofuranosyl ) purine and 6- ( methylmercapto ) -9- ( beta-d-ribofuranosyl ) purine and their corresponding beta-d-arabinofuranosyl derivatives were also effective initiators of maturation , causing approximately 50 % of the cell population to assume a differentiated phenotype .
C0007634
cell
C0007589
differentiated