regional central nervous system determination of tryptophan metabolism in rats bearing walker 256 tumors revealed elevated tryptophan in the hypothalamus , corpus striatum , mesencephalon , diencephalon , cerebellum and cortex , increased serotonin in the diencephalon and cerebellum and elevated 5-hydroxyindoleacetic acid in the diencephalon , hippocampus , pons-medulla , cerebellum and cortex .
C0020663
hypothalamus
C0012144
diencephalon