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Fig. 2 Fibronectin is dynamically expressed during heart regeneration. (A and B) Fibronectin expression by immunostaining in uninjured (A) and 7 dpa (B) ventricles, localizing to the injury site. MHC, Myosin heavy chain. (C?J) In situ hybridization for fn1 and fn1b in uninjured, 1, 7 and 30 dpa ventricles. In each section, violet indicates a positive signal. Dashed line indicates approximate resection plane. Scale bars: 50 μm.
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Reprinted from Developmental Biology, 382(2), Wang, J., Karra, R., Dickson, A.L., and Poss, K.D., Fibronectin is deposited by injury-activated epicardial cells and is necessary for zebrafish heart regeneration, 427-435, Copyright (2013) with permission from Elsevier. Full text @ Dev. Biol.