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Case Reports
. 1989 Mar;22(3):249-55.
doi: 10.1002/mrd.1120220302.

Crater defect in human spermatozoa

B Baccetti  1 , A G Burrini, G Collodel, A R Magnano, P Piomboni, T Renieri, C Sensini
Affiliations
Case Reports

Crater defect in human spermatozoa

B Baccetti et al. Gamete Res. 1989 Mar.

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.

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