title: Letter: T cells and B cells in HBsAg-positive patients with chronic persistent hepatitis and asymptomatic carriers.
mesh_terms: D000017:ABO Blood-Group System; D000293:Adolescent; D000328:Adult; D001402:B-Lymphocytes / Q000276:immunology*; D002353:Carrier State / Q000276:immunology*; D002648:Child; D005260:Female; D006506:Hepatitis A / Q000276:immunology*; D006801:Humans; D007111:Immunity, Cellular; D008297:Male; D008875:Middle Aged; D013601:T-Lymphocytes / Q000276:immunology*
chemical_list: D000017:ABO Blood-Group System