This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Social & Preventive Medicine
Toxoid is prepared from - 
Select and explain. 
A. Exotoxin, B. Endotoxin, C. Both, D. None
A: Exotoxin
Answer: A: Exotoxin 
Explanation: Ans. is 'a' i.e., Exotoxin Toxoids o Ceain organisms produce exotoxins e.g., diphtheria and tetanus bacilli. o The toxin produced by these organisms are detoxicated and used in the preparation of vaccines. o The antibodies produced neutralize the toxic moiety produced during infection, rather than act upon the organisms.