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Transmission electron microscopy (TEM) documents podocyte foot process effacement (A). Examples of organized linear structures in tubular epithelial cell cytoplasm are depicted in panels B–D. These structures ranged from polygonal (B and D) to ovoid (C). Some structures were composed of a single electron dense line (B), whereas others were composed of numerous parallel electron dense lines (C,D) separated by regularly spaced electron lucent lines (C,D).
