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. 2019 Jan 7;12:115. doi: 10.3389/fnana.2018.00115

Figure 1.

Figure 1

Modified g-deleted rabies tracing to identify feedback projection to the olfactory bulb. (A) Schematic outlining experimental design. (B1) Neurons labeled with mCherry rabies (red) and DAPI nuclear counter-stain (blue) at the injection site. Scale bar = 200 um. mi, mitral cell layer; opl, outer plexiform layer; ipl, inner plexiform layer; gl, glomerular layer; gcl, granule cell layer. (B2) Enlargement of neurons in (B1) shows clearly labeled neurons in the GCL. (C) Outline of approach involves automated fluorescence microscopy, coronal section alignment, automated cell counting, and subsequent analysis. (D) Example of coronal sections used for whole brain reconstructions.

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