Figure 3-20. Electron Micrographs Showing the Two Distinct Types i 

 Subcellular Particles Present in Lysosome-rich Fractions Isolated from R 

 Liver. The particles in Fig. (a), marked "a," are the so-called microbodie 

 and are characterized by a lamellar or cystalloid core. One such isolated co 

 is shown as a'. The particles in Fig. (b), marked "b," are the pericanicul; 

 dense bodies or true lysosomes. It is not known whether the microbodies, 

 represent a separate biochemical entity or a second form of lysosome. (Cou 

 tesy of Dr. C. deDuve, Universite de Louvain.) 



48 / CHAPTER 3 



