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. 2024 Jun 19;10(9):635–638. doi: 10.1016/j.hrcr.2024.06.008

Figure 2.

Figure 2

Biopsy samples of right ventricular myocardium and subcutaneous fat at the time of pacemaker implantation. A: Direct fast scarlet (DFS) staining of the right ventricular myocardium showed orange amyloid deposits. B: DFS staining of the right ventricular myocardium under polarized light showed apple-green birefringence. C: Immunohistochemical staining of the right ventricular myocardium showed positive results for transthyretin. D: DFS staining of the subcutaneous fat showed orange amyloid deposits. E: DFS staining of the subcutaneous fat under polarized light showed the apple green birefringence.