TY - RPRT TI - Dopamine dependent decrease in enkephalin and substance P levels in basal ganglia regions of postmortem parkinsonian brains. AU - S P Sivam PY - 1991 DO - 10.1016/0143-4179(91)90148-c UR - https://pubmed.ncbi.nlm.nih.gov/1711165/ ID - 1711165 ER -