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Cell type-specific Cre driver lines have revolutionized the analysis of retinal cell types and circuits. We show that the transgenic mouse Rbp4-Cre selectively labels several retinal neuronal types relevant to the encoding of absolute light intensity (irradiance) and visual motion. In the ganglion cell layer (GCL), most marked cells are wide-field spiking polyaxonal amacrine cells (ACs) with sustained irradiance-encoding ON responses that persist during chemical synaptic blockade. Their arbors spread about 1 mm across the retina and are restricted to the inner half of the ON sublamina of the inner plexiform layer (IPL). There, they costratify with dendrites of M2 intrinsically photosensitive retinal ganglion cells (ipRGCs), to which they are tracer coupled. We propose that synaptically driven and intrinsic photocurrents of M2 cells pass through gap junctions to drive AC light responses. Also marked in this mouse are two types of RGCs. R-cells have a bistratified dendritic arbor, weak directional tuning, and irradiance-encoding ON responses. However, they also receive excitatory OFF input, revealed during ON-channel blockade. Serial blockface electron microscopic (SBEM) reconstruction confirms OFF bipolar input, and reveals that some OFF input derives from a novel type of OFF bipolar cell (BC). R-cells innervate specific layers of the dorsal lateral geniculate nucleus (dLGN) and superior colliculus (SC). The other marked RGC type (RDS) is bistratified, transient, and ON-OFF direction selective (DS). It apparently innervates the nucleus of the optic tract (NOT). The Rbp4-Cre mouse will be valuable for targeting these cell types for further study and for selectively manipulating them for circuit analysis.
Pubmed ID: 28466070 RIS Download
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View all literature mentionsAn independent, nonprofit organization focused on mammalian genetics research to advance human health. Their mission is to discover the genetic basis for preventing, treating, and curing human disease, and to enable research for the global biomedical community. Jackson Laboratory breeds and manages colonies of mice as resources for other research institutions and laboratories, along with providing software and techniques. Jackson Lab also conducts genetic research and provides educational material for various educational levels.
View all literature mentionsSoftware tool for the visualization and annotation of 3D image data and was developed for the rapid reconstruction of neural morphology and connectivity. By dynamically loading only data from the surround of the current view point, seamless navigation is not limited to datasets that fit into the available RAM but works with much larger dataset stored in a special format on disk. Currently, KNOSSOS is limited to 8-bit data. In addition to viewing and navigating, KNOSSOS allows efficient manual neurite annotation (''skeletonization''). KNOSSOS is being used mostly for reconstructing cell morphologies from 3D electron microscopic data generated by Serial Block-Face Electron Microscopy (SBEM), with an occasional application to 2-photon and confocal optical microscopy data.
View all literature mentionsSoftware suite for electrophysiology data acquisition and analysis by Molecular Devices. Used for the control and recording of voltage clamp, current clamp, and patch clamp experiments. The software suite consists of Clampex 11 Software for data acquisition, AxoScope 11 Software for background recording, Clampfit 11 Software for data analysis, and optional Clampfit Advanced Analysis Module for sophisticated and streamlined analysis.
View all literature mentionsConfocal microscopy can improve conventional fluorescence images by recording fluorescence generated from the focal plane within the sample, while rejecting all other light coming from above or below the focal plane. The efficient point-scan/pinhole-detection confocal optics of the FluoView systems virtually eliminate out of focus light to produce high-contrast images with superb resolution. The FluoView systems are fully integrated workstations that incorporate user-friendly image acquisition and image analysis software with high-resolution confocal optics that require no user alignment. An , Windows-based graphic user interface allows new users to quickly generate images in various scan modes, such as XY, XZ, XT, XYZ, XYT, and XYZT. Standard image formats, including TIFF and AVI, permit easy, direct export of FluoView images to off-line analysis packages. XY scanning is performed with a pair of galvanometric mirrors, yielding a wide scanning range to cover up to a field number of 20. The optical zoom (up to 10x magnification) can be performed by narrowing the scanning range while maintaining the maximum pixel resolution of up to 2048 x 2048 pixels.
View all literature mentionsConfocal microscopy can improve conventional fluorescence images by recording fluorescence generated from the focal plane within the sample, while rejecting all other light coming from above or below the focal plane. The efficient point-scan/pinhole-detection confocal optics of the FluoView systems virtually eliminate out of focus light to produce high-contrast images with superb resolution. The FluoView systems are fully integrated workstations that incorporate user-friendly image acquisition and image analysis software with high-resolution confocal optics that require no user alignment. An , Windows-based graphic user interface allows new users to quickly generate images in various scan modes, such as XY, XZ, XT, XYZ, XYT, and XYZT. Standard image formats, including TIFF and AVI, permit easy, direct export of FluoView images to off-line analysis packages. XY scanning is performed with a pair of galvanometric mirrors, yielding a wide scanning range to cover up to a field number of 20. The optical zoom (up to 10x magnification) can be performed by narrowing the scanning range while maintaining the maximum pixel resolution of up to 2048 x 2048 pixels.
View all literature mentionsMus musculus with name STOCK Tg(Rbp4-cre)KL100Gsat/Mmucd from MMRRC.
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