7o 



Scientific Proceedings (63). 



of the connective tissue traheculae contain fat. The walls of the 

 small arteries are infiltrated with fat. 



The endothelial cells in the organs described appear to be 

 primarily affected. Later the fat is present in fibroblasts in the 

 interstitial tissue and in the parenchymal cells of various organs, 

 as liver, kidney, heart, and lungs. The process in the vessels is 

 not confined to the aorta but involves the pulmonary artery and 

 its branches and the vessels quite generally throughout the organs 

 described. 



A small portion of the fat present in the liver is isotropic. The 

 remainder of the fat here and the fat in other situations is aniso- 

 tropic. 



The process evidently reveals considerable difficulty on the 

 part of the rabbit of utilizing the cholesterin fat and as a result the 

 absorption of this fat by phagocytic endothelial cells in various 

 organs and later storage of the same in connective tissue and par- 

 enchymatous cells in the organs concerned. 



