THE ADRENAL BODIES 



111 



cell columns, which are of varying size and shape, and which 

 interlace in all directions. The cells are of different shapes 

 but mostly elongated and tapering, and they contain a large 

 round nucleus, which stains very deeply with haematoxylin. 

 This structure is the "cortical," which corresponds to the 

 "inter-renal" of Elasmobranchs, the corpuscles of Stannius 

 (" cranial " and " caudal " series) of Teleosts and the cortex of 

 Mammalian adrenal (see Fig. 26 s.c.). 



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FIG. 26. Section through suprarenal body of Bufo vulgaris showing a mass 

 of medullary substance (chromaphil tissue) surrounded by cortical 

 substance (from Giacomini). 



But in addition to the above-described structure, we get 

 masses of a different kind of cell. These are often at the 

 borders or ends of the cell columns, but are otherwise irregularly 

 distributed. In the islets anterior to the kidney in the Urodela 

 these masses of cells are more numerous, and some of the islets 

 are made up entirely of them. This structure is analogous to 

 the paired suprarenal bodies of the Elasmobranch fishes and 



