after adding camp analogs ( dibutyryl camp and 8-bromo camp ) and phosphodiesterase inhibitors ( theophylline , amino-phylline , and 1-methyl-3-isobutyl xanthine ) to the rao 188 cell culture medium , we measured changes in cell incorporation of the dna and rna precursors 14c-thymidine and 3h-uridine , and we observed the morphologic alterations of rao 188 by phase-contrast and transmission and scanning electron microscopy .
C0001455
camp
C0012054
dibutyryl camp