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    Hydrogen sulfide (H₂S) and implantation failure

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    In Assisted Reproduction Technologies (ART) practices we speak of implantation failure when a good quality embryo is transferred into the uterus but this fails to nestle in the endometrium. Failure to implant after several transfers of good embryos is referred to as repeated implantation failure. This is a serious form of infertility because there are few possible remedies.

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