Photomicrographs of immunopositive PMT cells that project to both MGs. For each column, the top panel represents labeling from an injection in the left MG, the middle panel represents labeling from an injection in the right MG, and the bottom panel represents immunolabeling for ChAT. In each column all three panels show the same field of view using different filters to visualize the different fluorescent labels. A) FluoroGold (FG) was injected in the left MG and green beads (GB) were injected in the right MG. Arrowhead - cell in left PPT labeled for FG (top panel), GB (middle panel), and ChAT-immunoreactivity (bottom panel). GP 484. B) Green beads were injected in the left MG and red beads were injected into the right MG. Arrowhead - cell in the left LDT labeled for GB (top panel), RB (middle panel), and ChAT-immunoreactivity (bottom panel). GP 585. Scale bars = 10 μm.