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COX-2-IR cells appeared in the cisterna chismatis at 2 (A), 4 (B), 6 (C), and 24 (D) hr after LPS injection. Little COX-2-IR cell was observed at 4 (E) and 6 (F) hr after saline injection. COX-2-IR cells also appeared in the blood vessels near the third ventricle (G) 4 hr after LPS injection and in those near the lateral ventricle (H,I) 4 and 6 hr after LPS injection, respectively.OX, Optic chiasma; V3, third ventricle. Scale bar, 50 μm.
