This image is an immunocytochemical confocal tile scan of cardiac cell culture with a high fraction of non-conducting cells (69%), where conducting cardiac cells are labelled with anti-α-actinin antibody and coloured in pink. Kudryashova et al. show in this issue that cardiac cells can form a conductive pathway (pink cells outlined in white), which enables electrical wave propagation despite a paradoxically small number of conducting cells. Such self-organisation into a connected branching network can be explained by alignment of cytoskeletons in the neighbouring cells, as demonstrated in a computer model.
Image Credit: Aygul Nizamieva
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