主要宿主 meaning in English

major host
prime host
principal host

The fusion ( f ) protein and hemagglutinin - neuraminidase ( hn ) are the major virulence factors of the virus to which the host responds well with protective antibody production . recombinant plasmids containing the f or hn gene can induce specific immune responses against ndv . however , dna vaccination by injection or gene gun routes is rather inconvenient and costly in field applications in scaled animal farms
融合蛋白( f )和血凝素-神经氨酸酶蛋白( hn )是ndv的主要宿主保护性抗原，以f基因和hn基因为免疫原研制的dna疫苗能诱导一定程度的免疫应答，但注射免疫或基因枪免疫途径因实际操作和成本等问题难以推广应用，而直接口服重组质粒dna免疫效果不理想。