MCQOPTIONS
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| 1. |
There are how many strains of H u0026 N proteins that cumulatively make up the HN breed of flu virus (eg. being the presently famous H1N1 virus) |
| A. | 9 u0026 9 respectively |
| B. | 16 u0026 16 respectively |
| C. | 9 u0026 16 respectively |
| D. | 16 u0026 9 respectively |
| Answer» E. | |