Electron micrographs of Purkinje-like cells in the IAS.

<p>The heart obtained from the same patient as in <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0113343#pone-0113343-g006" target="_blank">figure 6</a>. Pc, Purkinje-like cell; n, nucleus; m, mitochondria; mf, myofilaments; pm, plasma membrane; rer - rough endoplasmic reticulum. <b>A.</b> A transverse section of several Purkinje-like cells. The large size of cells and localization of myofilaments at the cell periphery are appreciated. <b>B.</b> A longitudinal section of a Purkinje-like cell. The regular sarcomeric organization of myofilaments and plasma membrane undulations are visible. A T-like cell is also seen to the left from the Purkinje-like cell. <b>C.</b> Densely packed rough endoplasmic reticulum in Purkinje-like cell cytoplasm.