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Effects of BDNF or hUCBSCs on ultrastructure of injured optic nerve (scanning electron microscope, × 100).
(A) Normal morphology of optic nerve cells in rabbits of the control group; (B) evident injury to optic nerve of rabbits in the model group; some nerve fibers were ordered on the cross section in the hUCBSC group (C) and BDNF group (D). Arrows show nerve fibers. BDNF: Brain-derived neurotrophic factor; hUCBSC(s): human umbilical cord blood stem cell(s).
