Increase of RNA synthesis during mammary tumor regression.

751 Increase of RNA Synthesis during Mammary Tumor Regression. Pietro M. Gullino, Yoon Sang Cho-Chung, Ilona Losonczy, and Flora H. Grantham. 758 Prolactin Receptors in Mammary Carcinoma Cells. Roger W. Turkington. 764 Strainand Age-dependent Transplacental Car cinogenesis by 1-Ethyl-1-nitrosourea in Inbred Strains of Mice. Bhalchandra A. Diwan and Hans Meier. 771 Macromolecular Synthesis following a Single Application of Polycyclic Hydrocarbons Used as Initiators of Mouse Skin Tumorigenesis. T. J. Slaga, G. T. Bowden, G. B. Shapas, and R. K. Boutwell. 778 Antagoni sm between DNA Synthesis Inhibitors and Protein Synthesis Inhibitors in Mammalian Cell Cultures. Bijoy K. Bhuyan and Terence J. Fraser. 783 Differential Effects of Urethan on the Transcrip tional Activity of Chromatin from Regenerating Liver. Kou M. Hwang, Sandra A. Murphree, and Alan C. Sartorelli. 788 Histocompatibility Typing and Course of Canine Venereal Tumors Transplanted into Unmodified Random Dogs. Robert B. Epstein and B. Taylor Bennett. 794 The Enzymology of Methionine Metabolism in Rat Hepatomas. Michael R. Grossman, James D. Finkelstein, Walter E. Kyle, and Harold P. Morris. 801 @ Tissue Culture Studies on Pleural Effusions from Breast Carcinoma Patients. Relda Cailleau, Bruce Mackay, Russell K. Young, and William J. Reeves, Jr. 810 Sites of Synthesis of Murine RNA Tumor Virus (Oncornavirus) Group-specific Antigens. Paul K. Pattengale, Hisami Ikeda, and G. Jeanette Thorbecke. 818 Tumor-associated Antigen(s) from Granulosa Cell Carcinomas of the Ovary. Malaya Bhattacharya, Joseph J. Barlow, Tsann Ming Chu, and M. Steven Piver. 823 Sensitivity of Transformed and Nontransformed Cells to Amphotericin B and Several Rifamycin Derivatives. Gerald Medoff, David Schiessinger, and George S. Kobayashi. 827 Thioacetamide-induced Alterations in Nuclear RNA Transport. Edward A. Smuckler and Marlene Koplitz. 839 Effect of (±)1,2-Bis(3,5-dioxopiperazin1-yl) Asterisks preceding the title refer to studies in humans. 663 @ Selective Cell Survival and Changes of Marker Properties during Cryopreservation for up to 16 Years.