Observations on the structure and levels of expression of murine spermatozoan abnormalities with special reference to tail deformations.

Spermatozoan abnormalities have been studied by light and electron microscopy in the cauda epididymidis of 3 month old Balb/c and C57Bl mice. A qualitative account of the different abnormality-types at both levels of microscopy is given, with special emphasis on tail-defects which have so far received little attention. Quantitative data by light microscopy are also provided in an attempt to correlate structural abnormalities with the difference in fertility between these strains.