1. The Tygerberg strict criteria : what are the clinical thresholds for in vitro fertilization, intrauterine insemination, and in vivo fertilization? / T.F. Kruger, F. Van der Merwe and J. Van Waart -- 2. The role of sperm cell morphology in intracytoplasmic sperm injection (ICSI) / M.L. Windt and T.F. Kruger -- 3. Relationship between sperm morphology and binding capacity to the zona pellucida : a critical step leading to fertilization / S.C. Oehninger -- 4. The use of the acrosome index in assisted reproduction / R. Menkveld -- 5. Quality assurance for sperm morphology assessment / D.R. Franken -- 6. What is a normal spermatozoon? / D.R. Franken and T.F. Kruger.