Intra-Cytoplasmic Sperm Injection or ICSI is the injection of a single sperm into the egg. This may be performed in the laboratory as a part of the IVF procedure.
It requires the use of special micromanipulation tools and microscopes which enable embryologists to select an individual sperm cell which is then carefully injected into cytoplasm of the egg.
These results in normal fertilization in approximately 70-85% of eggs injected with viable sperm.
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