Figure 1
The serum testosterone concentration was determined by radioimmunoassay. 1. experimental group; 2. model control group; 3. sham operation group; 4. blank control group. **P < 0.01.
Serum concentration of testosterone in each group of rats

The serum testosterone concentration was determined by radioimmunoassay. 1. experimental group; 2. model control group; 3. sham operation group; 4. blank control group. **P < 0.01.

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