LIVER. 



225 



beculae as shown in Fig. 254. Near the central veins they form terminal 

 loops. The cells composing the trabeculae are polygonal or cuboidal with 

 an exoplasmic layer which sometimes resembles a cell membrane. The 

 cells contain round nuclei which are variable in their staining capacity; 



True meshes. 



Lateral branches of bile capillaries. 



V- it ft* ' \ * / 9f * ^ 



;.'V - 



Sinusoids. 



Portion of a central vein. 



FIG. 254. FROM A CROSS SECTION OF A HUMAN HEPATIC LOBULE. X 300. 



Golgi preparation. The boundaries of the hepatic cells could not be seen. The black dots are 



precipitates of the silver. 



they may be dark or pale. Often a cell contains two nuclei, and rarely 

 large cells with several nuclei produced by amitosis, have been found. 

 The protoplasm is granular. It often contains brown pigment, especially 

 toward the central vein. Near the periphery of the lobule the cells may 

 contain fat vacuoles of varying size, found normally in well nourished 

 15 



