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Ultrastructure of the cytoplasm at the apical/basal ends of lens FC apical membranes. TEM micrographs of the growth cone-like structure (GC) with their leading edges (asterisks) at the (a) anterior and (b) posterior ends show them to be rich in organelles, such as mitochondria (m) and cisternae of the endoplasmic reticulum as well as an accumulation of unidentified electron-dense bodies (arrowheads). Micrographs taken from a young human lens.
