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Table 1 Cross reactivity between TK04 parental (190Asp) and mutant (190Ala) viruses as well as other H3N2 TR viruses of turkey origin based on HI-test.

From: Characterization of an H3N2 triple reassortant influenza virus with a mutation at the receptor binding domain (D190A) that occurred upon virus transmission from turkeys to pigs

Serum Virus Anti-TK04(190Asp) Anti-TK04(190Ala) Anti-NC03 Anti-IL04 Anti-MN05 Anti-NC05
TK04(190Asp) 2048/1024* 256/128* 128 64 1024 512
TK04(190Ala) 2048/1024* 1024/1024* 64 64 2048 512
NC03 512 256 64    
IL04 2048 256   128   
MN05 4096 2048    4096  
NC05 2048 512     1028
  1. * Antisera against each virus were produced by vaccinating two 2-week-old chickens with an inactivated virus for three times in two weeks interval.