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Representative immunofluorescent images of PINP in right atrial appendages (RAA) in patients in SR (A) and in patients with AF (B). Nuclei are stained blue with DAPI. Quantitative IHC data of PINP (C), carboxyterminal telopeptide of type I collagen (ICTP) (D), PIIINP (E) and IIINTP (F). The data are expressed as percent of positive labelling per tissue area.
