Hourai, Ryoto IgG4-Positive Plasmacytic Infiltration in Aortic Wall and Aortic Valve Surgical Samples and Its Relation to Preoperative Serum IgG4 Levels. [electronic resource] - International heart journal May 2019 - 688-694 p. digital Publication Type: Comparative Study; Journal Article ISSN: 1349-3299 Standard No.: 10.1536/ihj.18-490 doi Subjects--Topical Terms: AgedAged, 80 and overAorta--anatomy & histologyAortic Aneurysm--bloodAortic Valve--cytologyAortic Valve Stenosis--bloodEchocardiography--methodsFemaleHumansImmunoglobulin G--bloodImmunoglobulin G4-Related Disease--bloodMaleMiddle AgedPlasma Cells--immunologyPreoperative PeriodRetrospective Studies