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Relative radioresistance of xenogeneic and hybrid resistance to bone marrow transplantation. [Mice, gamma radiation]

Journal Article · · Transplantation; (United States)
OSTI ID:7304908
Following a single exposure to 1,100 R whole-body irradiation, (C57Bl/6 x A)F/sub 1/ hybrid mice were genetically resistant to transplantation of 5 x 10/sup 5/ C57 parental bone marrow cells (hybrid resistance). Hybrid resistance was minimally broken by increasing the radiation exposure to 2,200 R, and maximally broken by increasing it to 5,000 R. Following 1,100 R, (C57Bl/6 x A)F/sub 1/ hybrid mice were genetically resistant to transplantation of 5 x 10/sup 6/ Lewis RBM cells (xenogeneic resistance). This xenogeneic resistance was not even minimally broken following 5,000 R, but was broken following 6,600 R. With different doses of parental or xenogeneic marrow cells, it was found that the amount of irradiation exposure required to break either hybrid resistance or xenogeneic resistance was inversely proportional to the dose of bone marrow cells used.
Research Organization:
Baylor Coll. of Medicine, Houston, TX
OSTI ID:
7304908
Journal Information:
Transplantation; (United States), Journal Name: Transplantation; (United States) Vol. 23:2; ISSN TRPLA
Country of Publication:
United States
Language:
English