methyene blue的用法和样例：
例句
- Tubal patency was confirmed at laparoscopy by observation of the passage of methylene blue from vagiua through the fimbrial openings of the tubes.
对不孕症者还行输卵管伞端粘连分离，扩张或造口术，经阴道用稀释美蓝行输卵管通液术。 - Objective We did intraoperative venography by using methylene blue during varicocelectomy in order to prevent collateral veins ligation omitted and decrease recurrence rate.
目的探讨精索静脉结扎术中采用美蓝静脉造影术的效果。
