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Multilayers of vitreous collagen (col) with hyalocytes (Hy) and myofibroblasts (My) are evident in this fibrocellular membrane. Hyalocytes possess an oval nucleus with marginal chromatin, vacuoles, dense granules, and thin cytoplasmic protrusions. Myofibroblasts are distinguished by cytoplasmic aggregates of actin microfilaments forming stress bundles. Image courtesy of author R Schumann.
