Poly (rA) tracts of tumor virus 70S RNA are not transcribed in endogenous or reconstituted reactions of viral reverse transcriptase.

Adenine/metabolism Animals Avian Leukosis Virus/enzymology Centrifugation, Density Gradient Chickens Chromatography, DEAE-Cellulose DNA Nucleotidyltransferases/isolation & purification DNA, Neoplasm/analysis DNA, Viral/analysis Nucleic Acid Hybridization Polynucleotides/metabolism RNA, Neoplasm/biosynthesis RNA, Viral/biosynthesis RNA-Directed DNA Polymerase/metabolism Thymidine/metabolism Transcription, Genetic Tritium

DNA, Neoplasm DNA, Viral Polynucleotides RNA, Neoplasm RNA, Viral Tritium DNA Nucleotidyltransferases RNA-Directed DNA Polymerase Adenine Thymidine