Figure 4

Sperm movement analysed by SMAS Odf2+/− (+/−) spermatozoa are poor in movement compared to Odf2+/+ (+/+) spermatozoa. (A) Forward motility. (B) Average velocity. (C) The amplitude of the lateral head. All these factors are significantly lower (*P < 0.01) in Odf2+/− (+/−) than in Odf2+/+ (+/+). The total numbers of spermatozoa and males examined are written at the bottom of the figures. Representative tracts: optimal motility of Odf2+/+ (+/+) spermatozoa (D) and poor motility of Odf2+/− (+/−) spermatozoa (E). The total numbers of males and spermatozoa examined are written at the bottom of the figures.