Animals 2 Anterior olfactory nucleus 2 Brain 2 Chromosomes, Artificial, Bacterial 2 Embryo 2 Green Fluorescent Proteins 2 Green fluorescent protein Immunohistochemistry 2 Lateral parabrachial nucleus 2 Male 2 Mice 2 Mice, Transgenic 2 Microscopy, Confocal 2 Neurons 2 Patch-Clamp Techniques 2 Prefrontal cortex 2 Receptors, Dopamine D4 2 Ventral pallidum 2 animal cell 2 animal experiment 2 animal tissue 2 article 2 bacterial artificial chromosome 2 brain nerve cell 2 cell labeling 2 cingulate gyrus 2 corpus striatum 2 dopamine 4 receptor 2 dopaminergic transmission 2 enhanced green fluorescent protein 2