immune system
• the number of CD4 single-positive thymocytes are severely reduced in these mice
• peripheral CD4+ T cells are reduced from 41% of lymph node cells to 14%
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• negative selection of transgenic T cells leads to diminished CD4 T cells in the periphery
• apoptotic cells resulting from negative selection are found at the cortico-medullary and medullary portions of the thymus
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• T cells that escape central tolerance are able to respond to pigeon cytochrome-c but 10 times as much protein is needed to get a comparable response to Tg(TcrAND)53Hed transgenic
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hematopoietic system
• the number of CD4 single-positive thymocytes are severely reduced in these mice
• peripheral CD4+ T cells are reduced from 41% of lymph node cells to 14%
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