TABLE 4.   Inhibition of HPV-11-induced papillomas in experimental xenografts of human foreskin following SDS treatment of virus % SDS during treatmenta Final % SDS Total no. of papillomas No. of surviving grafts/no. of transplanted grafts 0 0 14 17/17 0.025 0.025 0 13/16 a Sterile SDS stocks (40 times the treatment concentration) were added to virus aliquots to achieve the treatment concentration.