Fig. 1. Immunodetection of the epitope-tagged D₂ receptor isoforms in transfected COS-7 and HeLa cell lines. COS-7 cells (A,B) and HeLa cells (C,D), have been transfected by either D_2b, revealed by the monoclonal 9E10 anti-myc antibody coupled to Texas-Red (A,C), or D_2a, revealed by the monoclonal P5D4 anti VSV-G antibody coupled to Texas-Red (B,D). These confocal microscope images reveal the large predominance of intracellular labeling detected with these antibodies. Bar, 2.5 µm.