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The Anatomical Record|October 1, 1987
Leydig cell differentiation during maturation of the rat testis: a stereological study of cell number and ultrastructureB R Zirkin, L L EwingEnvironmental Health Perspectives|April 1, 1981
Assessment of testicular testosterone production and Leydig cell structureL L Ewing, B R Zirkin, C ChubbEndocrinology|February 1, 1989
Kinetic studies on the development of the adult population of Leydig cells in testes of the pubertal ratM P Hardy, B R Zirkin, L L EwingJournal of Andrology|March 1, 1996
Testosterone autoregulation of its biosynthesis in the rat testis: inhibition of 17 alpha-hydroxylase activityK J Darney, B R Zirkin, L L EwingEndocrinology|December 1, 1984
Effects of luteinizing hormone withdrawal on Leydig cell smooth endoplasmic reticulum and steroidogenic reactions which convert pregnenolone to testosteroneT Y Wing, L L Ewing, B R ZirkinToxicology and Applied Pharmacology|November 1, 1991
Immature rat Leydig cells are intrinsically less sensitive than adult Leydig cells to ethane dimethanesulfonateW R Kelce, B R Zirkin, L L EwingThe American Journal of Anatomy|January 1, 1988
Comparison of components of the testis interstitium with testosterone secretion in hamster, rat, and guinea pig testes perfused in vitroS M Mendis-Handagama, B R Zirkin, L L EwingEndocrinology|June 1, 1989
Maintenance of advanced spermatogenic cells in the adult rat testis: quantitative relationship to testosterone concentration within the testisB R Zirkin, R Santulli, C A Awoniyi, et al.Endocrinology|December 1, 1980
Testosterone secretion by rat, rabbit, guinea pig, dog, and hamster testes perfused in vitro: correlation with Leydig cell ultrastructureB R Zirkin, L L Ewing, N Kromann, et al.Endocrinology|November 1, 1985
Restoration effects of exogenous luteinizing hormone on the testicular steroidogenesis and Leydig cell ultrastructureT Y Wing, L L Ewing, B Zegeye, et al.Pageof 32