The present invention provides (including the consensus sequence) a novel amino acid sequence of the avian influenza virus type A hemagglutinin protein. Across the serotypes family, it is designed broader spectrum of activity is obtained, these genes newly constructed, provides the basis of a ...
阅读下列文字,回答文字后的问题:禽流感是禽流行性感冒(Avian Influenza,AI)的简称,禽流感是由A型流感病毒引起的家禽和野禽的一种从呼吸病到严重性败血症等多种症状的综合病症.目