Figure 5.
TCRαβDN cells do not require MHC-dependent positive selection for development. Thymocytes were isolated from MHC class I–specific (HY and P14) or class II–specific (AND, 5CC7, and DO11.10) TCR transgenic mice bred onto a positively selecting (pos) or nonselecting, neutral (neut) MHC background. Cells were stained for CD4, CD8, and TCR (using antibodies: T370 for HY, anti-Vα2 for P14, anti-Vα11 for AND and 5CC7, and KJ-126 for DO11.10 TCR). The percent of transgenic (tg) TCRhi cells was determined from analysis of total thymocytes by software gating for CD4−CD8−, CD4−8+, or CD4+CD8−. Each bar represents the mean percentage (with SE bars) of TCRhi of CD4−CD8− or of total thymocytes from analyses of three to six individual mice per group.