Morphology 



377 



appear elsewhere than in the central nervous system, when the 

 saliva, the salivary glands and the pancreas were known to harbor 

 it. This has now been overcome by the demonstration of the 

 bodies in the sahvary glands in precisely the same form as that 

 seen in the nervous system by Manuelian.* 

 Steinhardt, Poor and Lambertf have endeavored to determine 



j= ° <u b '=' 



MS-rtg^ ! 



whether Negri bodies are parasitic micro-organisms or degeneration 

 products of the nervous system, and have shown that when cells 

 of the normal guinea-pig brain are incubated in blood plasma, their 

 cytoplasm, when stained by Van Gieson's stain, show small pink- 



* "Ann. de I'lnst. Pasteur," 1914, X3cvii, 233. 

 tJour. of Infectious Diseases, 191 2, xi, 459. 



