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Histological staining of formulations P‐0, S‐50, and fibrin control applied along the porcine inner AF tissue substrate before adhesion testing. Tissue and biomaterials were stained with alcian blue and cell nuclei counterstained with Weigert's hematoxylin. Formulation S‐50, with the three‐dimensional network of alginate microparticles, retained its shape when applied over the tissue surface, as opposed to P‐0 and fibrin, which spread easily. Scale bars = 100 μm
