Fig 4. Apoptosis is enhanced in the asthmatic mouse testis.

(A) A DNA ladder assay was conducted for the 10 testis samples from control and asthma group (left panel). Quantification of the bands with lower molecular weight (about 150bp) in the left panel was done by using Image J software (right panel). (B) Enzymatic activity of caspase-3/7 was measured for the testis homogenates using Caspase-Glo-3/7 assay kit, and the relative ratio was expressed in the bar graph. *indicates a significant difference (P<0.05), compared with the control group. **indicates a very significant difference (P<0.01), compared with the control group.