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. 1999 Mar 1;189(5):811–820. doi: 10.1084/jem.189.5.811

Figure 5.

Figure 5

Figure 5

Clonal deletion of P1A-specific transgenic T cells in mice overexpressing P1A in the thymus. (a) Overexpression of P1A mRNA in the thymus of P1A-transgenic mice (P1A-TG) as compared to that of nontransgenic mice (Non-TG). cDNA, prepared from total mRNA of J558 tumor cells, thymus P1A-TG, and Non-TG thymus, as described in the Fig. 1 legend, were diluted 1:10, 1:30, 1:90, or 1:270. 1 μl of the cDNA from each dilution was used for the PCR reaction. PCR products were transferred into nylon membrane, and the identity of the PCR products verified by 32P-labeled probes. The PCR products were not amplified from genomic DNA, as no P1A can be amplified in the absence of RT (data not shown). (b) Intrathymic clonal deletion of transgenic T cells in mice overexpressing tumor antigen in the thymus. Thymocytes (top) and spleen cells (bottom) from either TCR–TG or TCR/P1A–TG mice were analyzed by two-color flow cytometry for expression of CD4 vs. CD8 or CD8 vs. Vα8.