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ARL13B labelling of cardiac tissue from embryonic, neonatal, and young rat hearts. Confocal images immunolabelled for ARL13B (red) and nuclei (blue) in a embryonic, b neonatal (P2), and c, d young (P21 and P28) rat cardiac tissues. The small arrowheads show the presence of primary cilia in these images. Insets: magnified views of the primary cilia and nucleus from P2 and P21 rat cardiac tissue sections from the regions indicated by the large arrowheads
