the results of this study of the distribution of enkephalin-like immunoreactivity in four human `` '' senile '' '' and `` '' presenile '' '' brains by immunofluorescence microscopy ( coons ' method ) showed specifically fluorescing varicosities containing fibres in the following areas : nucleus accumbens , nucleus caudatus , pallidum ( mainly the external segment ) , septal nuclei , substantia innominata , hypothalamus , hypophysis , substantia nigra , nucleus interpeduncularis , locus coeruleus and other nuclei of the brain stem , most of the nuclei of the cranial nerves ( mainly the sensitive ) and spinal cord ( mainly the substantia gelatinosa of the posterior horn ) .
C0006104
e '' '' br
C0007461
nucleus caud