Figure 2.

(A) Confocal images showing expression of connexin 43 (Cx43, red) in cardiac slices obtained from wild-type mice hearts. Cx43 is mostly expressed at the cell poles, within the intercalated discs, where it colocalizes with pan-cadherin (green) (see magnified images). (B) Confocal image of a pair of end-to-end connected mice cardiomyocytes showing Cx43 expression (green) at gap junctions. Nuclei were stained with Hoechst 33642 (blue).