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history

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pia-arachnoid

pia-arachnoid This historical term appears to refer to the pia and arachnoid considered together as a meningeal covering of the brain.

This historical term appears to refer to the pia and arachnoid considered together as a meningeal covering of the brain. In the passage, it is described as showing changes such as slight opacity or adhesion to the dura and diseased cortex.