Table 1.

Experimental groups of BALB/c mice used in the protective potential of HK-1/H9N2 nanovaccine (n=50)

Group	Immunization scheme
C1	Normal saline
C2	Inactivated H9N2 antigen
A1	Chitosan nanoparticle-based H9N2 antigen without HK-1 (prime)
A2	Chitosan nanoparticle-based H9N2 antigen without HK-1 (booster 14 days after prime)
B1	Chitosan nanoparticle-based HK-1/H9N2 antigen (prime)
B2	Chitosan nanoparticle-based HK-1/H9N2 antigen (booster 14 days after prime)