FIG. 2.

Diagram of the BLV provirus and major transcripts. The locations of the two LTRs and the gag, pro, pol, env, tax, and rex genes are represented. Vertical arrows indicate restriction sites: S, SacI; E, EcoRI. The position and direction of the PCR primers are indicated on the provirus map. A horizontal bar indicates the region that was used as a probe. Only the genomic, env, and tax/rex transcripts are represented below. Alternatively spliced RNAs are not shown. The translation products of the spliced transcripts and the positions of the RT-PCR primers are indicated.