Abstract
Summary
A method is outlined whereby the great cerebral vein (of Galen) can be cannulated via an intradural sinus approach through the superior sagittal sinus. This allows for collection of venous blood draining the hypothalamic area of the brain. Also, a method for obtaining cavernous sinus blood via the facial vein is described. Assays of plasma obtained from these vessels revealed that they contained more LH (OAAD activity) than samples obtained from a leg vein.
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