Initial plasmids, oligonucleotides, and restriction sites used for constructing viral infectious cDNAs.

aAll initial plasmids except pBR-CA17/S2 have been previously described by Riquet et al. [51].bNumbering refers to the nucleotide sequences of the viral cDNA in the initial plasmid. The nucleotide sequence of the restriction sites used for constructing plasmid are underlined.