“…Adenovirus SA7, C8 strain, isolated from the African green monkey Cercopithm1s aethiops, was kindly supplied to us by Dr. H. Malherbe (The Poliomyelitis Research Foundation, Johannesburg, South Africa). Oncogenicity of this strain for hamsters has been described earlier (Hull er al., 1965;Altstein et al, 1968).…”