Figure 6.

Sperm tail development is observed in X^ESxr^bO male mice. Silver-stained sperm smears from 6-week-old XY, XSxr^aO, X^EOSry and X^ESxr^bO mouse testes. The top panel is a low magnification of the smear, showing the relative density of the cells found in each specimen. The bottom panel is a montage of the elongated spermatids/sperm found in each sample. Note that no elongated spermatids could be found in the X^EOSry sample and what we believe to be the arrested round spermatids are presented instead. An example of the most characteristic sperm head for each genotype is represented at a higher magnification in the inset of the bottom panels. Scale bar: 32.5 μm (top panel), 20 μm (bottom panel).