Hemaglutinin(HA) is an important absorbent protein and effectiv protective antigen of AIV.It not only mediates AIV to adsorb and penetrate cells,but also makes the host produce immunity against AIV.

血凝素蛋白(HA)既一种重要蛋白,介导病和穿入宿主细胞而发挥致病作用,也一种良好的保护性抗原,对宿主抵抗起到了决定性保护作用。

An intelligent clothes rack is developed with a block installed on the end of each knighthead,around which steel wire is enwind and connected to a DC motor and the clothes rail.

智能晾衣架的机械部分在普通拉杆式晾衣架两支撑杆的端部各安装一个滑轮,再穿入钢丝绳。