Osawa, Y., Higashiyama, T., and Yarborough, C., Catechol Estrogen Biosynthesis is Catalyzed by Aromatase Cyt P450 in Human Placentas, Ninth International Congress of Endocrinology, Nice, France, September (1992).
Shimizu, Y., Yarborough, C., Osawa, Y., Elger, W., and Chwalisz, K., Aromatase Inhibition by Antiprogestational Compounds, Ninth International Congress of Endocrinology, Nice, France, September (1992).
Nagatomi, K., Osawa, Y., Slaunwhite, W.R., Jr., Kirdani, R.Y., and Sandberg, A.A., Conjugation and Metabolism of 15a-Hydroxylated Estrogens, IVth International Congress of Endocrinology, Abstract No.
Ishihara, M., Osawa, Y., and Sandberg, A.A., Metabolism of Doubly Labeled Progesterone (P) in the Baboon, 4th International Congress of Hormonal Steroids, J.
Osawa, Y., and Shibata, K., Inadequacy of the 19-Aldehyde as an Intermediate in Estrogen Biosynthesis, 4th International Congress on Hormonal Steroids, J.
Osawa, Y., Makino, T., Shibata, K., and Weeks, C.M., Rotational Isomerism of Steroidal 17-Side Chain and Conformational Aspects of Adrenal Steroid Biosynthesis, Vth International Congress of Endocrinology, Abstract No.
Osawa, Y., and Shibata, K., Stereomechanism of Steroid Hormone Biosynthesis: Cyclic Mechanism of Lyase Reaction, 26th International IUPAC Congress, Tokyo, Japan, September (1977).
Osawa, Y., and Jimenez, J., Model System for Thyroid Hormone Biosynthesis, XIth International Biochemistry Congress Satellite Symposium on Hormones: Molecular Structure and Protein Interactions, Buffalo, New York, July (1979).
Rohrer, D.C., Weeks, C.M., Duax, W.L., and Osawa, Y., Estrogen Biosynthesis: 19-Oxygenated Intermediates, 10th International Congress of Crystallography and General Assembly of the International Union of Crystallography, Abstract No.
Osawa, Y., and Higashiyama, T., Estrogen Biosynthesis: Species Specificity of Androstenedione Aromatization Observed by Reconsititution of Purified Enzyme Components, Sixth International Congress of Endocrinology, Abstract No.
Osawa, Y., Model System for Study of Thyroid Hormone Biosynthesis: The Fate of Regiospecific Labels in the Coupling Reaction, VIII International Thyroid Congress, Abstract No.
Osawa, Y., Nakamura, T., and Higashiyama, T., Anti-Human Placental Aromatase and NADPH-Cytochrome P-450 Reductase Antibodies and Immunochemical Comparison of Human, Baboon and Horse Placental Estrogen Biosynthesis, 63rd Annual Meeting of the Endocrine Society, Endocrinology, 108, A-296, 156, Cincinnati, Ohio, June (1981).
Osawa, Y., Shibata, K., and Duax, W.L., Stereochemical Aspects of Estrogen Biosynthesis, XXVth International Congress of Pure and Applied Chemistry, Abstract No.
Yoshiharu, S., Takamori, S., Yamamoto, T., Okada, H., Kitano, Y., and Osawa, Y., Estrogen Biosynthesis by Human Lung Tissues: Comparison of Androgen Aromatase Activity in Fetal, Adult and Cancer Tissues, Folia Endocrin.
Yarborough, C., Tochigi, M., and Osawa, Y., Irreversible Inhibitory Effect of Tobacco Extract on Placental Estrogen Biosynthesis In Vitro, 7th International Congress of Endocrinlogy, Excerpta Medica, 1542, Abstract 2563, Quebec City, Canada, July (1984).