Figure 4. Gibberellin exposure increased the protein levels of p-AMPK and AMPK. (A–B) The relative protein levels of p-AMPK and AMPK in sperm were detected by immunocytochemistry and quantified based on the relative fluorescence intensity. (C–E) The relative protein levels of p-AMPK and AMPK in sperm were detected by Western blotting. The results are presented as the mean ± SEM.