作者确定了病毒A/WSN/33(H_1N_1)株神经氨酸酶(NA)基因的全核苷酸序列。整个序列用互补DNA插入pBR322质粒和克隆的方法导出,只有最末20个核苷酸是用引物延伸方法确定。WSN的NA基因含1,409个核苷酸。从5’端(有意义的链)以一段含19个核苷酸的不翻译区开始,接着是为453个氨基酸编码的1,359个核苷酸,最后在3’ The authors identified the full nucleotide sequence of the neuraminidase (NA) gene of the virus A / WSN / 33 (H_1N_1) strain. The entire sequence was derived by inserting complementary DNA into the pBR322 plasmid and cloning, with only the last 20 nucleotides determined by primer extension. The NA gene of WSN contains 1,409 nucleotides. Starting with a 19-untranslated region from the 5 ’end (meaningful strand), it is followed by 1,359 nucleotides encoded by 453 amino acids and finally at the 3’