PubMed=49975; DOI=10.1016/0042-6822(75)90014-8
Gordon M. Ringold, Etienne Yves Lasfargues, John Michael Bishop, Harold Eliot Varmus;
Production of mouse mammary tumor virus by cultured cells in the absence and presence of hormones: assay by molecular hybridization.
Virology 65:135-147(1975)

PubMed=212202; DOI=10.1016/0092-8674(75)90181-6
Gordon M. Ringold, Keith Robert Yamamoto, Gordon Mayer Tomkins, John Michael Bishop, Harold Eliot Varmus;
Dexamethasone-mediated induction of mouse mammary tumor virus RNA: a system for studying glucocorticoid action.
Cell 6:299-305(1975)

PubMed=189932; DOI=10.1016/0092-8674(77)90134-9
Gordon M. Ringold, Robert D. Cardiff, Harold Eliot Varmus, Keith Robert Yamamoto;
Infection of cultured rat hepatoma cells by mouse mammary tumor virus.
Cell 10:11-18(1977)