Methods of Making the Vaccine 277 



to be used with an antiserum, prepared by injecting animals with 

 such organisms as form the vaccine. In this manner the specific 

 bacteriolytic amboceptors are supposed to anchor themselves to the 

 bacterial cells, and sopave the way for immediate destructive treat- 

 ment in the body. To achieve such sensitization, some of the ap- 

 propriate serum is added to the bacterial suspension which need 

 not be subsequently killed, as the sensitized bacteria meet with 

 prompt destruction through the normal complement of the body 

 juices. However, if the bacteria are first killed by heat and then 

 sensitized, a similar result may be brought about, and one is re- 

 lieved of all anxiety as to the possibility of infection accidentally 

 resulting from the injections. 



