00 
: IMMUNITY— 
Natural, 
I Artificial. 
' Active. 
Passive. 
Acquired. 
Serum therapy — 
Anti-infectious sera. 
Antitoxic sera. 
Prophylactic sera. 
Curative sera. 
Ehrlich’s side chain theory. 
Phagocytosis. 
Preventive vaccines — 
Vaccinia (smallpox). 
Rabies. 
Anthrax. 
Symptomatic anthrax. 
Swine plague. 
Hog cholera. 
Rouget du pore. 
Plague. 
Typhoid fever. 
Cholera. 
Tetanus. 
Diphtheria. 
