AADC	aromatic L-amino acid decarboxylase
AN	arcuate nucleus
BCH	2-aminobicyclo[2.2.1]heptane-2-carboxylic acid
DA	dopamine
E	embryonic day
KRS	Krebs-Ringer solution
L-DOPA	L-3,4-dihydroxyphenylalanine
P	postnatal day
PBS	phosphate-buffered saline
PeVN	periventricular nucleus
SN	substantia nigra
TH	tyrosine hydroxylase