to determine if insulin in cerebrospinal fluid ( csf ) may be a source of some insulin in brain tissue , [ 125i ] iodoinsulin was stereotaxically injected into a lateral cerebral ventricle , and the uptake of radioactivity into periventricular hypothalamus was localized by both quantitative autoradiography of paraffin-embedded brain sections and by measuring the radioactivity present in microdissected brain regions .
C0152279
lateral cerebral ventricle
C0006104
brain