MCQOPTIONS
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MCQOPTIONS
| 1. |
Which statements is/are correct with reference to the animal serum in vaccines? |
| A. | The use of horse serum as an antibody supplement in the diphtheria vaccine is more than 100 years old. |
| B. | Horses used to be injected with small doses of bacteria that caused diphtheria so that they could develop antibodies. |
| C. | Both A & B |
| D. | None of these |
| Answer» D. None of these | |