1. 
   embryonic period
   Period from fertilization to the end of major organogenesis. [8]
   Found op http://sis.nlm.nih.gov/enviro/iupacglossary/glossarye.html
   
   
2. 
   Embryonic Period
   The period of time that occurs from the moment of conception until the eighth week of pregnancy, at which time the fetal period begins.
   Found op http://www.pregnology.com/AZ/E/2
   
   

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