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OCT images of brain tissue slices under compression for (a) cerebral cortex (grey matter) and (b) corpus callosum (white matter, bundle of myelinated axons). (a-1, b-1) no compression, (a-2,b-2) 20%, (a-3, b-3) 40%, (a-4, b-4) 60% and (a-5,b-5) 80% compression.
