Abstract
ACQUIRED immunological tolerance of heterologous cells is of much lower degree than tolerance of homologous cells1. In experimental embryonal parabiosis2, a large quantity of powerful antigenic stimulus is administered; this acts for a relatively long time during the ‘adaptive period’ and usually results in the formation of cell chimeras. A relatively high degree of heterologous tolerance was sometimes obtained by this method, for a prolonged survival of heterografts has been found in turkey–chicken parabionts1, and an interspecific blood chimera demonstrated3.
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References
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HAŠEK, M., HRABA, T. & HORT, J. Acquired Immunological Tolerance of Heterografts. Nature 183, 1199–1200 (1959). https://doi.org/10.1038/1831199a0
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DOI: https://doi.org/10.1038/1831199a0
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