MCQOPTIONS
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				| 1. | 
                                    Inactivated microorganisms are used in the manufacture of which of the following________________? | 
                            
| A. | Salk vaccine | 
| B. | Tetanus toxoid | 
| C. | Sabin’s oral vaccine | 
| D. | All of the above | 
| Answer» B. Tetanus toxoid | |