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Figure 1 Left ventricular tissue of fibroblast growth factor-1 (FGF-1) transgenic and wild-type mice was stained with polyclonal antibody against FGF-1 (Promega, Madison, Wisconsin), and Vector red was applied as the secondary antibody. The diffuse staining of cardiomyocytes and extracellular matrix was observed in FGF-1 transgenic mice. Negative control shows background staining with only the secondary antibody Vector red. Note the low expression level of FGF-1 in the non-transgenic littermates.
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