Contents. List of Contributors. Preface (P.M. Wassarman). Genetic Control of Mesoderm Patterning and Differentation During Drosophila Embryogenesis (M.Frasch and H.T. Nguyen). Acrosomal Proteins of Abalone Spermatozoa (V.D. Vacquier. W.J. Swanson, E.C. Metz, and C.D.Stout). Capacitation of the Mammalian Spermatozoon (G.S. Kopf, P.E. Visconti, and H. Galantino-Homer). Ovarian Nitric Oxide: A Local Regulator of Ovulation, Oocyte Maturation, and Luteal Function (L.M. Olson). The Regulation and Reprograming of Gene Expression in the Preimplantation Embryo (R.M. Schultz). Roles of Metalloprotease-Distintegrins in Cell-Cell Interactions and in the Cleavage of TNFa and NOTCH (C.P. Blobel). An Intimate Biochemistry: Egg-Regulated Acrosome Reactions of Mammalian Sperm (H.M. Florman, C. Arnoult, I.G. Kazam, C. Li, and C.M.B. O'Toole). Index.