GZMA and breast cancer: Transcription of both cd8 and gzma were unaffected by BC-PRV in hearts of NB-SJR salmon, whereas mean cd8 transcription became elevated 10–12-fold in hearts of BC salmon at 10–14 wpc (Figure 2F) and mean gzma expression was increased by approximately 100-fold at 14 wpc in BC salmon relative to controls (Figure 2G).