Active artificial immunization is induced by the administration of all of the following EXCEPT______________?
Correct answer: D. Antitoxins
- A. Bacterial products
- B. Toxoids
- C. Vaccines
- D. Antitoxins
Explanation
Antitoxins contain preformed antibodies, so they provide passive artificial immunity rather than stimulating the recipient to make its own response. Vaccines, toxoids, and suitable bacterial products induce active artificial immunity.
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