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Biology of Reproduction, Vol 12, 632-640, Copyright © 1975 by Society for the Study of Reproduction

The Head, Neck and Midpiece of Cock Spermatozoa Examined with the Transmission Electron Microscope

MURRAY R. BAKST 1, and BIRKETT HOWARTH Jr. 1

1 Poultry Science Department, Livestock-Poultry Building, Athens, Georgia 30602


Cock spermatozoa were isolated from fresh ejaculates and prepared for transmission electron microscopy. The subacrosomal space of the head separated the conical-shaped acrosome from the elongated nucleus. A prominent perforatorium was observed in the subacrosomal space. The neck region consisted of a centriolar complex and a non-striated connecting piece which extends apically into the implantation fossa. Approximately 30 mitochondria surround the distal centriole and the proximal portion of the axonemal complex of the midpiece.

Accepted on February 10, 1975






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Copyright © 1975 by the Society for the Study of Reproduction.