Closer view of the origin of the vas deferens. Note the duplicated vas deferens originating from the tail of the epididymis. BED, body of epididymis; DVD, duplicated vas deferens; HED, head of epididymis; TED, tail of epididymis. Unilateral duplication of vas deferens: a cadaveric case report. Sirasanagandla SR, Nayak SB, Jetti R, Bhat KM - Anatomy & cell biology (2013). Not Altered. CC.