PTGS1 and neoplasm: We further analyzed the expression levels of cyclooxygenase-1 (cox1) and cox2 genes, which showed increased expression in tumor lesions from both groups in the RNA-seq data; this observation confirmed no significant differences in cox1 and cox2 expression levels in the 10 other tumor lesion samples each from vRB-1B_Meq and vRB-1B_L-Meq groups (Fig. 7F and G).