Lippes loop

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promotes phagocytosis of sperms within uterus

suppresses the motility and viability of sperms

makes the cervix hostile to spermatozoa

makes the uterus unsuitable for implantation

answer is A.

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Detailed Solution

Lippe's loop is a non-medicated IUD that increases phagocytosis of sperms within the uterus. The first ever Lippe's loop was introduced in 1962. It was a plastic double “S” loop, a trapezoid shaped IUD that closely fit around the contours of the uterine cavity, reducing the incidence of expulsion.

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