The fertilized oocytes are cultured until the day of embryo transfer either a) on the 2nd day (2-4 cell stages) b) 3rd day (6-8 cell stage) or c) 5th/6th day (blastocyst stage).
The embryo transfer is a painless procedure, performed without anesthetic-usually taking 5-10 minutes and can be likened to a simple PAP test. The embryos are placed in a catheter and introduced into the uterus vaginally.
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