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. 2011 Aug 10;106(5):2346–2357. doi: 10.1152/jn.01100.2010

Fig. 1.

Fig. 1.

Locations of the uniquely identifiable Müller and Mauthner cells. A: photomicrograph of the dorsal surface of the isolated lamprey (Petromyzon marinus) brain and about 2 segments of spinal cord. This brain preparation retains some meningeal sheath that is speckled with numerous dark melanocytes. The dashed rectangle indicates the region shown in B. M, mesencephalon; R, rhombencephalon; SC, spinal cord. B: fluorescent photomicrograph of Müller and Mauthner cells injected intracellularly with Lucifer yellow. In this image, not all the cells injected were Müller cells and not all Müller cells were successfully injected. The Müller cells not injected were the right I1, right B2, and right B4. The I cell at right is I2, as is the smaller I cell at left, and the large I cell at left is I1. The I2 cells were not used in this study. Two smaller reticulospinal neurons just caudal to the uninjected right B4 were also injected. C: schematic of the typical arrangement of the Müller and Mauthner cells used in this study. The dashed line represents the midline. M1–M3, mesencephalic Müller cells located in the mesencephalic reticular nucleus; I1, isthmic Müller cells located in the anterior reticular nucleus; B1–B4, bulbar Müller cells located in the middle rhombencephalic reticular nucleus; MTH, Mauthner cells.

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