Figure 6

Dopaminergic nerve fibers within nerves that extend between acini Whole mounts of salivary glands were double-labeled with anti-dopamine (red) and BODIPY FL phallacidin (blue), and imaged by confocal microscopy. Acinar lobules (asterisks) are connected by nerves of large (broad arrows) and small (long arrows) diameter, containing dopaminergic fibers. In some of theses nerves, the dopaminergic fibers branch extensively and have numerous varicosities (b), suggesting that these sites represent neurohemal organs. Scale bar = 50 μm