(A) CT-RCC-8 and CT-RCC-9 are shown with the relative positions of the common region, exons, and the nucleotide numbers corresponding to those of the clone RP3-488C13 on chromosome 6q (GenBank accession number AL133408). gag, capsid region; pro, protease region; pol, polymerase region; env, envelope region. (B) The striped boxes represent the 375-bp common region, and the open and dotted boxes represent the unique regions of CT-RCC-8 (1,780 bp) and CT-RCC-9 (203 bp), respectively.