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1. Application of hamster papova virus to newborns of Syrian hamster has produced some s.c. sarcomas after a 5 to 6 month latency period, by virtue of the strong inducer effect of this papova virus to endogenous (latent) oncorna viruses. 2. Cellfree filtrates from a polymorphorus-cell sarcoma produced in this way, when applied to newborn hamsters of the spontaneously tumour-free hamster line HaP, again lead to sarcoma formation after a latency period of 3--8 months in about 20% of the animals; the same holds for cellfree filtrates of these cellfree induced sarcomas and their transplantation generations. 3. In these tumours C-type oncorna viruses, but no papova virus, could be demonstrated regularly. 4. The hamster specificity of this sarcoma virus is suggested by the complete absence of a tumorigenic effect of the cellfree filtrates from these hamster sarcomas in mice and rats. The preferential induction of hamster sarcomas by sarcoma filtrates, in conjunction with the fact that filtrates from hamster leukoses, indicates a certain difference between hamster leukemia and hamster sarcoma viruses.
A Graffi, and
E Bender, and
T Schramm, and
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A Niezabitowski, and
F Schneiders
April 1974,
Nihon Igaku Hoshasen Gakkai zasshi. Nippon acta radiologica,
A Graffi, and
E Bender, and
T Schramm, and
I Graffi, and
A Niezabitowski, and
F Schneiders
April 1974,
Tanpakushitsu kakusan koso. Protein, nucleic acid, enzyme,
A Graffi, and
E Bender, and
T Schramm, and
I Graffi, and
A Niezabitowski, and
F Schneiders
January 1974,
Verhandlungen der Deutschen Gesellschaft fur Pathologie,
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January 1953,
Zeitschrift fur Krebsforschung,
A Graffi, and
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I Graffi, and
A Niezabitowski, and
F Schneiders
October 1977,
Beitrage zur Pathologie,
A Graffi, and
E Bender, and
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I Graffi, and
A Niezabitowski, and
F Schneiders
April 1981,
Nihon Shokakibyo Gakkai zasshi = The Japanese journal of gastro-enterology,
A Graffi, and
E Bender, and
T Schramm, and
I Graffi, and
A Niezabitowski, and
F Schneiders
June 1960,
Archives of pathology,
A Graffi, and
E Bender, and
T Schramm, and
I Graffi, and
A Niezabitowski, and
F Schneiders
January 1973,
Zeitschrift fur Krebsforschung und klinische Onkologie. Cancer research and clinical oncology,
A Graffi, and
E Bender, and
T Schramm, and
I Graffi, and
A Niezabitowski, and
F Schneiders
January 1964,
Archives of oral biology,
A Graffi, and
E Bender, and
T Schramm, and
I Graffi, and
A Niezabitowski, and
F Schneiders
April 1972,
Science (New York, N.Y.),
