antigenic subtype 中文意思是什麼
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Sequence comparison indicated that the nucleotide homologies between the ha gene and those from eight other h3 subtype sfv isolates from china are over 95 %, and nucleotide identities between h3 sfv isolates in china and a typical h3 subtype avian influenza virus ( aiv ) strain dkuk1 - 63 are 95 % to 100 %. these might tell us that the ha gene of all h3 subtype sives isolated in china was originally from aiv although the vaccine based on ha do not protect against different subtype of influenza virus, it can provide favorable resistance to infection with antigenic variants within a subtype
通過與其它7株國內siv分離株和6株genebank中的h3流感病毒ha序列比較分析，結果表明分離自我國不同地區的8株h3siv核苷酸序列同源性均在95 %以上，且與禽流感病毒（ aiv ）經典代表株dkuk - 63序列同源性在95 - 100 %之間，證實我國h3sivha基因來源於禽的流感病毒。 -
To elucidate the antigenic drift and evolution of h9n2 subtype avian influenza viruses ( aivs ), five isolates from the north of henan province during 1998 - 2002 were compared and analysed by cross - hemagglutinin inhibition test ( hi ), cross - virus neutralization test ( vn ) in the chicken embryo and chicken embryo primary kidney cell ( cek ) and cross protection against challenge infection test
為了探討h _ 9n _ 2亞型禽流感病毒的抗原性有否發生漂移，本研究從生物學角度和ha基因分子水平上對1998 ? 2002年間在河南省豫北地區分離到的5株h _ 9n _ 2亞型禽流感病毒的抗原性變化進行了比較和分析。 -
The results revealed that antigenic drift had occurred in virus strains of the same h9n2 subtype in the north of henan province during 1998 - 2002. h9n2 subtype aivs were stable from 1998 to 1999, since the mutual protection between 98a5 and 99s approached to 100 %, which was consistent with results in hi and vn tests
1998年和1999年h _ 9n _ 2亞型禽流感病毒較穩定， 98a5和99s毒株間的保護力接近100 ，在hi 、雞胚中和、細胞中和試驗結果的相關性均在0 . 74以上，表明兩毒株間的抗原性相近。
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