... the study. YK, MT, and MI, con-ducted the laboratory work. YK, MT, AU, SO, AS, HK, KT, and YI were involved in the analysis and interpretation of data. YK,MT, and YI were involved in writing the ... heme oxygenase (HO)-1 and ferritin in hemophagocytic syndrome (HPS) and adult-onset Still's disease (ASD)Serum heme oxygenase (HO)-1 and ferritin in hemophagocytic syndrome (HPS) and adult-onset ... be useful in the differential diagnosis of hyperferritinemia and perhaps also in monitoring disease activity in HPS and ASD.IntroductionHeme oxygenase (HO) is an enzyme that catalyzes the conver-sion...