pandemic influenza viruses hoping for the road not taken 的两种糖蛋白,血凝素(hemagglutinin,ha)和神经氨酸酶(neuraminidase 的两种蛋白:血凝素(hemmaglutinin,ha)和神经氨酸酶(neuraminidase,na 具有血凝素(hemagglutinin)第5型,神经氨酸酶(neuraminidase)第1型 vitro qualitative detection of hydrogen peroxide neuraminidase