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Single-armed two-suture technique. a. epididymal tube showed clearly. b. placement of two sutures in epididymal tube. c. epididymal fluid was taken for sperm examinination. d. When sperm were identified, two needles were carefully pulled out and placed though the mucosal layer of the vas deferens with an inside-out approach at microdot a2 and b2, respectively.
