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Silencing of FGFR2 exon IIIb in the heart. Cryosections of hearts from wild-type (WT), GIIIb/Rint, and GΔΔ/Rint animals were stained with Hematoxylin and Eosin Y (H&E) and imaged by light microscopy to detect histological structures (top panels) after they were analyzed by epifluorescence microscopy to detect RFP (middle panels) and GFP expression (bottom panels). Images were acquired at 200× magnification. (BV) blood vessel; (CM) cardiac muscle.
