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Direct Fast Scarlet and Congo Red Staining in Identification of Eosinophils and their Cell-free Granules in Cardiac Tissue

2024-12-27 cardiovascular medicine Title + abstract only
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BackgroundCell-free eosinophil granules, which are considered harmful to the heart, are stained red by haematoxylin-eosin (HE); however, they can be overlooked in cardiac tissue due to the reddish staining of cardiomyocytes and fibres. Direct fast scarlet (DFS) and Congo red (CR), known for staining amyloid deposits, stain eosinophil granules; however, no firm evidence currently exists. This study aimed to confirm that DFS and CR stain eosinophil granules red and evaluate their advantages over H...

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