Fig. 3
From: Novel distance-progesterone-combined selection approach improves human sperm quality
The percentage of sperm concentration at different positions. D2, Position Groove D2; E2, Position Groove E2. When selected, the fixed 200 μl of sperm suspension was put in Chamber A, the original concentrations at Chamber A at 0 min represented 100%. Data are expressed as mean ± SEM (n = 8). The results suggest that sperm are able to swim to positions D2 and E2 from Chamber A in 150 min and the majority of sperm were screened. There was no statistical difference between Positions D2 and E2 (paired t test, P = 0.849)