Amino Acid Substitution at Position 631 in Mx Protein of Some Chicken Breeds and Its Antiviral Activity against VSVΔG*-G
| Breeds | Position 631 | Antiviral activity |
| WLR | S | negative |
| KS | S | negative |
| NG | S | negative |
| KJ-2 | N | positive |
| HN | N | positive |
| WLK-2 | N | positive |
| SM-2 | N | positive |
| SHK | N | positive |
[i] Ser, S; Asn, N.