The N134 tumour cells overexpressing either Bcl-xL mutants or wild-type HA-Bcl-xL became more elongated as compared to the control N134 tumour cells infected with RCASBP-HA-β-actin26 ∼3 weeks after infection with RCASBP viruses (Fig. 4c,d). This evidence concerns the gene BCL2L1 and infection.