Whole blood transcription of cd8– a transcript marker for cytotoxic T cell presence, differentiation, and activation—did not appear to be affected by the presence of BC-PRV (Figure 2C), although gzma—a transcript associated with cytotoxic T cell-directed killing—was similarly elevated by 5–14-fold at 10 wpc in both salmon strains (Figure 2D). This evidence concerns the gene CD8A and breast cancer.