SECTION OF MESENTERIC LYMPHATIC NODE. 



171 



not here be demonstrated. Note the variously sectioned small 

 arteries.) 



7. The follicular cords. (In the thicker section, the field will be 

 completely crowded with lymphoid cells. Select a thin field and 

 observe: (a) The lymphoid cells. (These will be found varying in 

 size from a very small red blood-disc to that of a large white corpuscle; 

 some are filled with granules only, and others with one, two, and 

 even three nuclei.) (b) The branching endothelioid cells, (c) The 

 delicate fibrillae of the adenoid reticulum. (You may endeavor to 



FIG. 114. FRAGMENT OP SECTION SHOWN IN FIG. 113. MORE HIGHLY MAGNIFIED, x 350 



A. Trabecula. 



B. Follicular cord. 



C. Lymph-path. 



D. Large branching cells of the path-network. 



E. Capillaries of the cord. 



determine whether this reticulum exists as an offshoot of the endothe- 

 lioid cells, or whether the latter are simply adherent to the broadened 

 plates of the former.) 



8. The reticulum of the lymph paths. (Observe that this is pre- 

 cisely like the reticulum of the follicular cords, as demonstrable after 



