we found that the subgenomic mrna 's that direct the synthesis of the env and src gene products have uninterrupted spliced leader sequences of approximately 390 nucleotides , whereas virion rna and full-length intracellular viral rna have 5 ' termini homologous to the cloned viral dna probe over at least the first 735 bases .
C0035668
rna
C0035736
viral rna