ZIKV Env, M-Env and prM-Env induced mitotic catastrophe in lentiviruses-transduced PC12 cells. (A) PC12 cells were transduced with LV-ZIKV-prM-Env, LV-ZIKV-M-Env, LV-ZIKV-Env or LV-eGFP at an MOI of 100, immunostained with an anti-His antibody followed by anti-mouse Alexa Fluor 633-conjugated antibody, and then counterstained with DAPI for nuclear staining (Scale bar= 100 μm). Mitotic catastrophe was characterized by the appearance of aberrant nuclei clusters. The number of aberrant nuclei clusters in each treatment condition was counted from 5 random fields per well by an individual who was blinded to the treatment. (B) Data are presented as a percent of the total number of cells on the dish. **: P<0.01 versus with LV-eGFP.