Fig. 6
From: Semen parameters are seriously affected in acephalic spermatozoa syndrome
The proportion of headless spermatozoa and semen parameter values (intact cells). Box plot displaying the minimum, 25th, median, 75th, and maximum values and of VAP (average path velocity), ALH (amplitude of lateral head displacement) and BCF (beat cross frequency) according to the various groups of the proportion of headless spermatozoa. Differences between groups were investigated by the nonparametric Mann-Whitney test. * P < .05; ** P < .005; *** P < .0005; **** P < .0001