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GENERAL EMBRYOLOGY 



Fia. 43. Fully grown human oocyte freshly removed from the ovary. Out- 

 side the oocyte are the clear zona pellucida and the follicular epithelium (corona 

 radiata). The central part of the oocyte contains deutoplasmic bodies and the 

 eccentric nucleus (germinal vesicle) ; superficially is a well marked exoplasmic or 

 cortical layer. From Waldeyer-Hertwig. 



Fio. 44. Fully grown egg of Hydra viridis, containing nuclei of ingested cells. 

 gr>, nucleus of egg. The egg is amoeboid. From Waldeyer-Hertwig, after 

 Kleinenberg. 



