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Cortical region of the SAH group slide. Hematoxylin and eosin staining. Magnification 20x. (a) Overview photo of all layers, (b) layers 1–3 close view, (c) layers 4–6 close view. (1) Hemorrhage, (2) perivascular edema, (3) pericellular edema, (4) dark neuron, (5) evanescent cell, (6) collapsed vessel.
