title: [Study of humoral factors of natural and acquired immunity in children with acute leukemia].
mesh_terms: D000293:Adolescent; D000818:Animals; D000910:Antibodies, Heterophile / Q000302:isolation & purification; D000914:Antibodies, Viral / Q000302:isolation & purification; D002648:Child; D002675:Child, Preschool; D003165:Complement System Proteins; D004912:Erythrocytes / Q000276:immunology; D006386:Hemagglutination Tests; D006460:Hemolysin Proteins / Q000302:isolation & purification; D006801:Humans; D007110:Immunity, Active; D007945:Leukemia, Lymphoid / Q000276:immunology*; D009975:Orthomyxoviridae / Q000276:immunology; D012756:Sheep / Q000276:immunology
chemical_list: D000910:Antibodies, Heterophile; D000914:Antibodies, Viral; D006460:Hemolysin Proteins; D003165:Complement System Proteins
vernacular_title: Izuchenie gumoral'nykh faktorov estestvennogo i priobretennogo immuniteta u deteĭ, bol'nykh ostrym leĭkozom