Combined antiviral effect of DNA inhibitors on adenovirus multiplication

9 purine or pyrimidine analogues or other inhibitors of DNA synthesis were studied on their single and combined inhibitory effect on the multiplication of adenovirus 9--15 in HeLa cell cultures. The criterium of inhibition was the total suppression of the formation of infectious virus. Inhibiting concentrations were derived from isobolograms. 34 of 36 drug pairs acted in a synergistic manner, one pair showed additive and one no interaction.