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Chronic skin graft rejection in the urodela. I. A comparative study of first- and second-set allograft reactions by Nicholas Cohen is a Environmental Science article available to read on EtoBox.

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Unlike acute skin allograft reactions observed in most randomly breeding ectothermic and endothermic vertebrates, a basic pattern of intermediate to prolonged chronic skin graft rejection characterized the alloimmune response of representatives of at least five genera of salamanders from three different families (Salamandridae, Ambystomatidae, and Proteidae). First-set median survival times (MST's) ranged from 33 to 55 days at 25°C. Individual zero end points (total melanophore destruction) occurred between 17 and 120 days. Several grafts appeared to have survived indehitely (> 300 days) with full to partial viability. MSYs of second-set grafts were sign%antly shorter than first-set MST's for all salamanders except Ambystoma tigrinum. For this species, the small sample of seven repeat grafts all exhibited either prolonged survival vis-a-vis first-set grafts or were destroyed well within the range of first-set rejections. About 25% of the combined individual Taricha and Necturus repeat grafts were completely destroyed at the same postoperative time as or significantly later than fist-set grafts from the same donor. Only curtailed survival of Cynops second-set grafts was noted. When

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Author

Nicholas Cohen

Publisher

John Wiley and Sons; Wiley (John Wiley & Sons); John Wiley & Sons Inc.; Wiley (ISSN 0022-104X)

Published

1968

Language

EN

Field

Environmental Science (Life Sciences)