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Immunocytochemical staining of human cardiac fibroblasts. A) Cells cultured for 10 d and then stained with Discoidin Domain Receptor 2 (DDR2) antibody (green) and counterstained with Alexa™488-conjugated (red) phalloidin probe. B) Isotype control, cells stained with isotype control antibody for DDR2 (green) and phalloidin probe (red). The nuclei, visualized with DAPI (blue).
