Affinity chromatography(2) influenza A(2) latex agglutination(2) immunoglobulin Y(2) Diagnosis(2) latex nanoparticles.(2) (2) chromatography resins(1) Recombinant protein(1) COVID-19(1) ultracentrifugation(1) virus-like particles stability.(1) chicken interferon-α(1) BCG vaccination(1) rHBsAg(1) Avian influenza virus(1) SARS-CoV-2(1) Alternative purification techniques(1) heterologous expression(1) thioredoxin fusion system.(1) immunopathological response.(1) size-exclusion chromatography(1) Hydroxychloroquine(1)