968 



GROWTH AND THE AGING PROCESS 



14 



Fig. 9. Giant cell of Betz from the 

 motor cortex of a 29 year old man. 

 The Nissl material is abundant. The 

 karyoplasm is clear and the nucleolus 



stains deeply, x 1500. 



(After Andrew, 1956a). 



Fig. 10. Giant cell of Betz from the 

 motor cortex of a 78 year old woman. 

 The Nissl material is scanty. The 

 karyoplasm is lightly basophilic and 

 the nucleolus is pale, x 1500. 

 (After Andrew, 1956a). 



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