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. 2020 Dec;70(6):499–509. doi: 10.30802/AALAS-CM-20-000042

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Figure 6. — The Masson trichrome (MTC) staining of the left ventricle. Positive areas represent in blue. Grading system of MTC positive: Grade 0; no positive area to Masson trichrome (no visible blue area). Grade 1; slightly positive area to Masson trichrome in interstitial or perivascular area. Grade 2; patchy or local positive area to Masson trichrome in interstitial, perivascular, and subendocardial areas. Grade 3; multifocal generalized positive area to Masson trichrome in many tissues of the heart. CT control group, DM diabetic group, CM cardiomyopathic group, DMCM, diabetic and cardiomyopathic group.