1. Introduction

   • C. Kent Osborne

   William L. McGuire Memorial Symposium Pages: 1 - 1

2. Estrogen and progestin effects in human breast carcinogenesis

   • Roger J. B. King

   William L. McGuire Memorial Symposium Pages: 3 - 15

3. Estrogen receptors: Ligand discrimination and antiestrogen action

   • Benita S. Katzenellenbogen
   • Henry Fang
   • Carol K. Wrenn

   William L. McGuire Memorial Symposium Pages: 17 - 26

4. Drug resistance to tamoxifen during breast cancer therapy

   • Douglas M. Wolf
   • V. Craig Jordan

   William L. McGuire Memorial Symposium Pages: 27 - 40

5. Modulators of cellular protein phosphorylation alter thetrans-activation function of human progesterone receptor and the biological activity of progesterone antagonists

   • Dean P. Edwards
   • Nancy L. Weigel
   • Candace A. Beck

   William L. McGuire Memorial Symposium Pages: 41 - 56

6. Control of breast cancer cell growth by steroids and growth factors: Interactions and mechanisms

   • Gilles Freiss
   • Christine Prébois
   • Françoise Vignon

   William L. McGuire Memorial Symposium Pages: 57 - 68

7. 1,25(OH)₂D₃ modulation of mammary tumor cell growth in vitro and in vivo

   • Simone Saez
   • Nicole Falette
   • Michel Crepin

   William L. McGuire Memorial Symposium Pages: 69 - 81

8. The role of erbB2 signal transduction pathways in human breast cancer

   • Ruth Lupu
   • Marc E. Lippman

   William L. McGuire Memorial Symposium Pages: 83 - 93

9. The role and prognostic significance of p53 gene alterations in breast cancer

   • Richard M. Elledge
   • Suzanne A. W. Fuqua
   • D. Craig Allred

   William L. McGuire Memorial Symposium Pages: 95 - 102

10. 16th Annual San Antonio breast cancer symposium

    Announcement Pages: 103 - 130

11. Abstracts

    Abstract Pages: 131 - 190