Fig. 4-4. Detail of large lymphocyte; normal human blood. The 

 large mitochondria (m) are conspicuous. The circular profiles 

 probably represent cross sections. Numerous profiles of endo- 

 plasmic reticulum (er) and randomly scattered Palade granules 

 (pg) may be seen. (X 24,000) 



Fig. 4-5. Detail of lymphocyte; normal human blood. Numerous profiles of 

 endoplasmic reticulum (er) are visible above. Each of the 2 compound vacuoles 

 (cv) has a cluster of small vacuoles around it. (X 29,000) 



Fig. 4-6. Detail of lymphocyte; normal human blood. This compound 

 Vacuole (cv) is typical, with a cluster of vacuoles surrounding it and numerous 

 small profiles within. (X 53,000) 



58 



