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  • Journal
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  • Article
    OKunewick JP, Phillips EL, Brozovich B.
    Am J Hematol. 1976;1(4):443-52.
    Studies have been carried out to determine the sensitivity of hematopoietic CFU-S from Rauscher leukemic mice to an antiserum against the disease prepared in syngeneic mice. Test of this antiserum against Rauscher virus prior to injection showed it to be effective both in vitro and in vivo. At the same time, normal serum was shown to be without effect either against the CFU-S or against the virus. Spleen CFU-S were obtained from control and leukemic mice over a sequence of days following Rauscher virus injection and assayed by transplantation technique. Prior to transplantation these were incubated in vitro in either normal syngeneic serum or syngeneic antiserum. Incubation with antiserum had no effect on CFU-S obtained from the spleens of normal mice. However, incubation in this antiserum of spleen CFU-S from Rauscher leukemic mice resulted in a reduction of up to 50% in their colony-forming ability. Additional tests with guinea pig complement suggested that the levels of inactivation seen are not complement limited. This antiserum-induced reduction in colony formation was first evident in the second week after the injection of virus, coincident with the onset of splenomegaly in the leukemic mice. Thereafter, sensitivity of CFU-S to the antiserlm could be detected up to the terminal point of the leukemia (44 days).
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