Massachusetts 

 Agricultural Experiment Station 



Technical Bulletin No. 14 June, 1928 



Cutaneous Immunity in Relation 

 to Contagious Epithelioma 



By Norman J. Pyle 



The investigation of contagious epithelioma at this Station has for its 

 purpose the determination of an efficient preventive and curative treat- 

 ment for the disease. This is of vital importance to the Massachusetts" 

 poultry industry because the disturbance causes serious loss by decreasing 

 egg production during the season when eggs are highest priced. A sero- 

 logical study of immune birds was made for the purpose of standardizing 

 the vaccine already extensively used. As this work progressed it became 

 evident that immunity against the disease was not of a general nature, 

 and therefore a study of cutaneous immunity was undertaken in its stead. 

 Results of this latter investigation are reported in this bulletin. 



Requests for Bulletins should be addressed to tlie 



AGRICULTURAL EXPERLMENT STATION 

 AMHERST, MASS. 



