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Nafarelin: A commonly used fertility drug which reduces hormone levels to almost zero so that the fertility cycle can be controlled more easily. Taken in the form of a nasal spray.

Natural cycle: Treatment cycle in which no drugs are given to stimulate egg production.

Neonatal death: The death of a baby within 28 complete days of delivery. 

Nucleus: The part of a cell which contains the genetic material DNA.

Page last updated: 18 July 2012