Organization of chicken DNA sequences homologous to the transforming gene of avian myeloblastosis virus. I. Restriction enzyme analysis of total DNA from normal and leukemic cells.

Hybridization probes consisting of cloned DNA recombinants which represent different regions of the leukemogenic sequence (amv) from avian myeloblastosis virus were used to carry out a more detailed restriction endonuclease analysis of the homologous sequences (proto-amv) present in normal and leukemic chicken DNA. The results show that four large introns interrupt the normal cellular proto-amv sequences and that there is no major rearrangement of these sequences in leukemic myeloblasts.