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The endometrium is the “layer” in the uterus where the embryo becomes attached and is subsequently implanted so that pregnancy can happen.
This “layer” should be prepared and synchronized with the embryo. For this reason, drugs need to be administered to send the right signs to the uterus so that its “receptivity” is optimal.
Fortunately, preparation is extremely simple: injections, tests and frequent appointments are not necessary at this stage. In most cases only one injection is needed for the whole treatment and one or two ultrasounds are normally enough to confirm that preparation is going well.

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