The papers in this volume were presented at the Symposium on Steroid Hormone Receptor Systems held October 18-20, 1978, at the Worcester Foundation for Experimental Biology, Shrewsbury, Mass. The meeting was organized to review, discuss, and disseminate new knowledge about the regulation and function of the receptor proteins which mediate estrogen, progestin, glucocorticoid, and androgen action. The symposium brought together leading scientists whose interests span the spectrum of biological organization. On this occasion, Drs. Elwood V. Jensen and Etienne E. Baulieu were honored as...