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    Vasectomy: First thwarted by Nature

    Vasectomy, normally achieved by tying or cutting the vas deferens to prevent sperm being ejaculated in the seminal fluid, is by no means a foolproof method of birth control. The sperm ducts have the astonishing facility, in some rare circumstances, of joining themselves up again, so hard will Nature struggle to thwart efforts to tamper with its processes! Spontaneous recanalization of the divided vas has been known since it was first reported by Rolnick in 1954.


    From The Illustrated Book of Sexual Records.
    © 1974, 1982, 1997-2001 G.L. Simons

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