一般 低致病力禽流感病毒（LPAIV）的HA裂解位点处只有一个单独的精氨酸，这种低 致病性毒株的HA蛋白只能被呼吸道、消化道等少数细胞中的类胰酶样蛋白酶所 裂解，因...
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而低致病力禽流感病毒同样可以给养禽业带来灭顶之灾，对人类的威胁同样严重，尤其是H9亚型禽流感。
But the low pathogenicity bird flu virus may bring the total destruction similarly to the poultry raising business, is similarly serious threat to humanity, particularly H9 hypotype bird flu.
按照在禽类群体中的致病力，可将禽流感病毒分为两类：高致病性或低致病性。
AI viruses are divided into two groups based on their ability to cause disease in poultry: high pathogenicity or low pathogenicity.
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