
Dopaminergic mesencephalic systems and behavioral performance in very old rats
Keywords: aging; mesencephalic; tyrosine hydroxylase; morphometry; motor tests; open fieldANOVA, analysis of variance; DA, dopaminergic; DAB, 3,3-diaminobenzidine tetrahydrochloride; IA, interaural; ml, medial lemniscus; mp, mammillary peduncle; SN, substantia nigr