 
			 
			MCQOPTIONS
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				| 1. | What are the solutions prepared from weakened or dead microorganisms, viruses, or toxins that provide some immunity from diseases? | 
| A. | Vaccines | 
| B. | Histamines | 
| C. | Drugs | 
| D. | Antibiotics | 
| Answer» B. Histamines | |