After being deeply anesthetized with Ketamine and Xylazine, mice were perfused with phosphate buffer saline (PBS) and 4% paraformaldehyde in PBS. Brains were post-fixed overnight with 4%A PFA/PBS, embedded in 2% agarose /PBS, and then sectioned at 50 μm with a vibratome (Leica, Buffalo Grove, IL VT1000S). The following antibodies were used for immunohistochemistry: anti-GFP rabbit (Life Technologies, Thermo Fisher, Waltham, MA A-11122), anti-GFP chicken (Aves labs, Tigard, OR GFP-1020), anti-HA rat (Roche diagnostics, Indianapolis, IN clone 3F10). Whole slide images were taken with a microscope with 5x objective and XY-stage controlled by μManger (https://micro-manager.org). Grid/Collection stitching Fiji plugin (Preibisch et al., 2009 (link)) was used for image assembly. We followed the dual-color in situ protocol described in BraInSitu web site (http://www.nibb.ac.jp/brish/indexE.html) (Watakabe et al., 2006 (link)).
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