Homograft Tolerance in Mice: Use of Urethan and Sublethal Irradiation

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Science  03 May 1963:
Vol. 140, Issue 3566, pp. 483-484
DOI: 10.1126/science.140.3566.483


Adult mice [CBA/J (H-2k)], which received either a single sublethal dose of x-radiation (500 rad) or urethan plus 500 rad, were given intravenous injections of C3H/HeJ (H-2k) spleen or bone marrow cells (18 to 42 x 106 cells per mouse) or both, for 3 days. C3H/HeJ tail-skin homografts were retained (over 130 days) by these mice, whereas BALB/cJ (H-2d) homografts all were rejected within 33 days. Similarly irradiated or urethan-treated controls (or controls treated with a combination of both), which did not receive C3H cells, rejected both homografts. Specific homograft tolerance is induced in adult mice by this procedure.