IVF is a process by which egg cells are fertilised by sperm outside the body. For IVF, the eggs and sperms are put together in a petri dish. By natural selection, the egg will usually allow only one sperm to enter. This usually results in fertilisation of the egg. After fertilisation, the embryos are allowed to grow for a short period of time before being placed into the uterus. A successful pregnancy can be confirmed about two weeks later.
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