HISTORIC DEVELOPMENT OF IMMUNOLOGY 53 

 THERAPEUTIC PASSIVE IMMUNIZATION 



In therapeutic passive immunization the con- 

 ditions are somewhat different. During the 

 course of an infectious disease the tissue-cells 



Lord Lister (1827-1912). 



are actively engaged in combating the infecting 

 bacteria, so that reinforcements in the form of 

 specific antibodies are indicated and welcomed 

 for the aid they give in overcoming the infec- 



