CTC-96, a cobalt containing complex, was tested as a putative topical
therapeutic agent for the treatment of papillomavirus-induced tumors i
n our cottontail rabbit papillomavirus (CRPV)-rabbit model system. Fol
lowing experimental infection of domestic rabbits with CRPV, CTC-96 wa
s applied to infection sites twice daily, 5 days a week for a total of
8 weeks. Two levels of concentrations of aqueous CTC-96 were compared
to placebo control-treated animals. With increasing dose of CTC-96 we
observed tumors earlier, larger, and more often across eight infected
sites on each animal.