|
|||||
|
|
Crater defect in human spermatozoa |
|
| Authors: | Professor B. Baccetti A. G. Burrini G. Collodel A. R. Magnano P. Piomboni T. Renieri C. Sensini |
| Affiliation: | Institute of General Biology, University of Siena and the Centro per to Studio delle Cellule Germinali, C.N.R., Siena, Italy |
| Abstract: | This report describes the “crater defect” in human spermatozoa, a malformation that consists of a nuclear and acrosomal invagination present in 100% of the cells, whereas tail structure and motility are fairly normal. The defect occurs during spermiogenesis. A possible concomitance with abnormalities in the microtubular apparatus involved in the sperm molding is discussed. |
| Keywords: | human spermatozoa “crater defect,” nuclear malformation acrosome malformation cytoskeleton sperm head morphogenesis |