Immunofluorescence and immunochemistry were performed as previously described (Cosset et al., 2015 (link), 2016 (link)). The following primary antibodies were used: mouse anti-neuronal nuclei-specific protein (NeuN) (Chemicon;MAB377), rabbit anti-βIII-tubulin (Covance;PRB435P), goat anti-ChaT (Chemicon; AB144P), rabbit anti-HB-9 (Abcam; ab922606), rabbit anti-ISLET1 (Abcam; ab22450), goat anti-GALR3 (Abcam), mouse anti-EV-71 (Abcam; ab36367), and mouse anti-PV-3 (Abcam; ab22450). Alexa Fluor (555 and 488)-labeled antibodies from goat or donkey against mouse, goat, or rabbit (Molecular Probes) were used as secondary antibodies. Cell nuclei were stained with DAPI (4, 6-diamidino-2-phenylindole). For IHC, biotin-conjugated anti-rabbit IgG or anti-goat IgG were used and developed using avidin-biotin peroxidase detection system (Vector Labs) with 3,3′-diaminobenzidine substrate (DAB, Sigma-Aldrich) after 2 min of incubation.
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