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OOCYTE DENUDATION FOR ICSI

Human oocyte denudation is the process of removing the surrounding cumulus cells from an oocyte (egg cell) to expose the zona pellucida, which is the outer membrane of the egg. This is typically done in assisted reproductive technologies (ART) like in vitro fertilization (IVF). The process involves: 1. **Enzymatic Treatment**: Using enzymes like hyaluronidase to loosen and break down the extracellular matrix holding the cumulus cells. 2. **Manual or Mechanical Removal**: Using a fine pipette under a microscope to gently aspirate or wipe away the cumulus cells. Denudation is important for: **Sperm injection**: In techniques like intracytoplasmic sperm injection (ICSI), the sperm needs direct access to the egg's membrane. **Embryo assessment**: It allows better evaluation of the oocyte's quality and morphology before fertilization. It is usually performed immediately before fertilization to ensure the egg is fully prepared.