Figure 4.

The improvements in apoptosis with VED therapy under different negative pressures. (a) The TUNEL assay was used to show these changes. (b) All VED therapy groups have significantly decreased apoptosis compared to the BCNC group; the red arrow indicated the expression of apoptosis (Student's t-test was used for each comparison, ^*P < 0.05, n = 6 per group; scale bars = 50 μm). VED: vacuum erection device; BCNC: bilateral cavernous nerve crush; TUNEL: terminal deoxynucleotidyl transferase dUTP nick end labeling.