Introductions.- Introductory Remarks.- Opening Address Important Questions in Womens Health Research: Determining the Influence of Hormones on Health.- Symposium Presentations Mammary Carcinogenesis: A Unifying Hypothesis.- Regulation of Cytochrome P-450 and Carcinogenesis: Peroxisome Proliferator-Activated Receptor and Dioxin Receptor.- State Of The Art Lectures.- 1 Cell Cycle and Cell Proliferation.- 2 Role of a Cell Cycle Regulator in Hereditary and Sporadic Cancers.- 3 Molecular Cytogenetics of Solid Tumor Progression.- 4 Nucleocytoplasmic Shuttling of Estrogen Receptors Is Blocked by Pure Antiestrogens.- I. Epidemiology: Hormonal Cancers.- Causality in Hormone Associated Human Cancers.- 5 Breast Cancer Incidence in Women Exposed to Estrogen and Estrogen-Progestin Replacement Therapy.- 6 Breast Cancer Trends in Women in Sweden, the UK, and the USA in Relation to Their Past Use of Oral Contraceptives.- 7 Gene Expression in Familial Breast Cancer: A Genetic-Epidemiology Study of Premenopausal, Bilateral Breast Cancer.- 2. Breast/Mammary Gland.- The Importance of Human Breast Development in Mammary Carcinogenesis.- 8 Breast Susceptibility to Carcinogenesis.- 9 Hormones, Growth Factors and Gene Expression in Preneoplasias of the Mouse Mammary Gland.- 10 Pathogenesis of Ductal and Lobular Progestin-Induced Mammary Carcinomas in BALB/c Mice.- 3. Endometrium/Uterus.- 11 Is the hsp90 Connection Between Steroid Receptors and Immunosuppressant Binding Immunophilins Involved in the Control of Gene Transcription and Cell Growth?.- 12 Expression and Regulation of 17?-Hydroxysteroid Dehydrogenase Type 1 in Steroidogenic Cells and Estrogen Target Tissues.- Growth Factors in Endometrial Cancer.- 4. Kidney.- 13 Introduction Estrogens and Genitourinary Cancers of Syrian Hamsters.- 14 Interstitial Cell Origin of Estrogen-Induced Kidney Tumors in the Syrian Golden Hamster.- 15 Effects of Estrogens on Microtubule Assembly: Significance for Aneuploidy.- 16 Estrogen Carcinogenesis:lss