Hemagglutinin ( ha ) is proved to be the main immune pathogen of chicken accounting for inducing of antibody against ai and main target antigen causing humoral immunity in chicken . it plays an important role in anti - infection immunity 研究表明其ha基因是诱导机体产生抗体的主要免疫原，是机体对禽流感病毒产生体液免疫的主要靶抗原，在机体的抗感染免疫中起重要作用。
