Structures of the sRRV and spRRV vectors used in this study. (A) spRRV-TK vectors consist of the common element vector (sRRVgp-RFP) and spRRVe-TK vector. The sRRVgp-RFP vector contains the murine leukemia virus gag-pol coding sequence and RFP gene. The spRRVe-TK vector contains the gibbon ape leukemia virus env coding sequence and HSV1-TK gene. (B) sRRV-TK vectors consist of the common element vector (sRRVgp-RFP) and sRRVe-TK vector. (C) spRRV-FL vectors consist of the common element vector (sRRVgp-RFP) and spRRVe-GFP vector. (D) sRRV-FL vectors consist of the common element vector (sRRVgp-RFP) and sRRVe-TK vector.
