Constructed full-length cDNA pGEM-5Zf(+)/F1-7 of CSFV C-strain was linearized by restriction enzyme SrfⅠ,genomic RNA was in vitro transcribed and further transfected into cell line SK-6 by liposomes. Cells were collected after being passaged 5 times continuously,and were used to identify infection by RT-PCR,direct fluorescent antibody,and sandwich ELISA.The results indicated that infectious RNA of CSFV could be obtained from constructed full-length cDNA.Successful construction of infectious full-length cDNA...