Figure 6: The sperm expression of Pdzk1 in normozoospermia and asthenozoospermia. (a) Box and whiskers plot of Pdzk1 expression in spermatozoa. Boxes indicate the 25th and 75th percentiles, the middle line indicates arithmetic mean. **P < 0.01, compared with normal control. (b) Western blot analysis of the expression of Pdzk1. α-Tubulin was used as normal control. N: normozoospermia; A: asthenozoospermia; Pdzk1: PDZ domain containing 1.