Human spermatid. Transmission electron micrograph (TEM) of a section through a human testis (testicle),showing a single round spermatid. Spermatids mature into spermatozoa (sperm cells). One pole of the nucleus is covered with the developing acrosome,a cap-like membranous organelle,within which are enzymes required for penetration of the egg during fertilization. Round spermatids transform by the process of spermiogenesis into elongated spermatids by condensation/reshaping of the nucleus (dark,centre),loss of most cytoplasm and development of a tail/flagellum. Magnification: x6,000,when printed 10 centimetres wide | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Microscape |
Bildgröße: | 4740 px × 3715 px |
Modell-Rechte: | nicht erforderlich |
Restrictions: | - |