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The potential space between the dura mater and the arachnoid mater. Normally the arachnoid mater is pushed tightly against the dura mater by cerebrospinal fluid in the subarachnoid space.
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The potential space between the dura mater and the arachnoid mater. Normally the arachnoid mater is pushed tightly against the dura mater by cerebrospinal fluid in the subarachnoid space.