Fig. 4
![Fig. 4](http://media.springernature.com/full/springer-static/image/art%3A10.1186%2Fs12958-020-00591-2/MediaObjects/12958_2020_591_Fig4_HTML.png)
Comparison a) The mean sperm DNA fragmentation percentage (TUNEL positivity%, P = 0.0401) and b) The mean sperm protamine deficiency (CMA3 positivity%, P = 0.0001), before and after letrozole treatment
Comparison a) The mean sperm DNA fragmentation percentage (TUNEL positivity%, P = 0.0401) and b) The mean sperm protamine deficiency (CMA3 positivity%, P = 0.0001), before and after letrozole treatment