It is a cap-like structure derived from the Golgi apparatus. Study tools and advice. It is conceivable that the defective, ubiquitylated spermatozoa may interfere with the success of IVF and ICSI treatments, because ubiquitylation was previously demonstrated to accompany various types of sperm head and sperm tail anomalies in human and animal spermatozoa Sutovsky et al. Careers home and forums. Specifically, ubiquitylation facilitates histone—protamine replacement Chen et al. Impairment of the antifibrotic prostaglandin E 2 pathway may influence neutrophil extracellular traps-induced fibrosis in the mare endometrium.
Figure The stages of spermatogenesis.
Cell structure - AQA