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Transmission electron microscopy of BM/Ch preparations. (A) BM from an eye immediately fixed after enucleation and with RPE intact. (B) BM from a BM/Ch preparation. Scale bars, 500 nm. bm, basement membrane; ic, inner collagenous zone; elastic, elastic fiber layer; oc, outer collagenous zone; Endo, endothelium; RPE, retinal pigment epithelium.
