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. 2024 Mar 15;119(3):453–479. doi: 10.1007/s00395-024-01036-2

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© The Author(s) 2024

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Fig. 3 — Picrosirius red (PSR) staining of collagen in porcine heart tissue. a Representative fluorescence microscopy images from PSR-stained cryosections collected from the infarct core and the border zone at the indicated points in time after MI or sham procedure (d = days; green autofluorescence: cardiomyocytes, red fluorescence: PSR-positive collagen fibers). b Myocardial collagen content as determined by fluorescence microscopy of PSR-stained tissue cryosections. Mean ± SD; ****p < 0.0001 vs. pooled sham (two-way ANOVA with Dunnett’s multiple comparisons test)