Fig. 5From: Infectious agents is a risk factor for myxomatous mitral valve degeneration: A case control studyMMP9 analysis. a: Counts of MMP9 antigens. b and d: Normal mitral valve. c and e: Mitral valve with myxomatous degeneration; b and c: IHC for MMP9; d and e: MMP9 antigen identification (yellow and orange dots) by Aperio analysis. IHC: immunohistochemistry; G1: group 1; G2: group 2; μm2: square micrometers; Ag: antigen; mm: millimeters. Bar =50 μmBack to article page