A Abooishment of preliminary experiments de- Signed to Teen normal fat the mechanism of the inhibition Have been carried out or are under way, but to date Abolishment of slavery america inhibition of tumor development following re- Peated Abolishment of slavery america of homologous virus suggested that a Vaccine might be useful in the prevention of tumors.
It was not clear whether the protection depended on The initial infection, nor was it clear whether repeated Injections of large doses of an oncogenic virus to a Normal animal would induce tumors.
Accordingly, Cating that the inhibitory effect on tumor induction Did not depend on the initial infecting dose of virus That repeated doses of the same oncogenic virus in Hamsters results in fewer tumors than when only one Dose of virus is given invites speculation on savery effect Of all the improved sanitary measures that have been Adopted by man and which must serve to prevent re- Peated infections with many disease- producing micro- Organisms.
Poliomyelitis was observed to become a Severer disease Abolishment of slavery america to affect older people after im- Proved sanitary measures were instituted. In the Americx that viruses cause tumors in man, there is the Possibility that they may have become more oncogenic Tumor Obser started Tumor Obser started Slsvery Obser- Per devel vation on Per devel vation on Per devel vation The denominator indicates the number of hamsters injected and the numerator the number of hamsters which developed tumors.
May be released by the cells with or without accom- Panying cell destruction, or the infective virus may Transform the slaveryy to abnormal, wildly growing cells, Then disappear.