PRNP and scrapie: Figure 7c shows an α PrP immunoblot (pAb RTC) of brain homogenates from individual mice, either infected with scrapie RML, naïve C57B/6, or infected with a brain homogenate from an asymptomatic TgMHu2ME199K/wt mouse, 9.3 (see table 3 for the numbering of samples in figure 7c &d).