with the use of gapless series of thick sections ( 800 microns ) stained for lipofuscin pigment as a stable intraneuronal characteristic , it was found in the human brain that the three magnocellular nuclei in the basal forebrain-the medial septal nucleus , the nucleus of the diagonal band ( vertical and horizontal limb ) and the basal nucleus of meynert located within the substantia innominata-were tightly connected with each other .
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brain
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nucleus of