Identification of the simian virus 40 which replicates when simian virus 40-transformed human cells are fused with simian virus 40-transformed mouse cells or superinfected with simian virus 40 deoxyribonucleic acid

Identification of the simian virus 40 which replicates when simian virus 40-transformed human cells are fused with simian virus 40-transformed mouse cells or superinfected with simian virus 40 deoxyribonucleic acid