Increased extracellular dopamine concentrations and FosB/DeltaFosB expression in striatal brain areas of heterozygous GDNF knockout miceAiravaara, Mikko; Planken, Anu; Gäddnäs, Helena; Piepponen, Timo Petteri; Saarma, Mart; Ahtee, LiisaEuropean journal of neuroscience2004 / 9, p. 2336-2344 : ill