Immunofluorescence staining was conducted as previously described (13 (link)). Staining was conducted overnight at 4°C with anti-NeuN (1:500; ab104225; Abcam, Waltham, MA), rabbit anti-CD68 (1:500; ab125212; Abcam), rat anti-BrdU (1:500; ab6326; Abcam) and/or rabbit anti-Iba1 (1:500; ab178847; Abcam) primary antibodies. Sections were then incubated with appropriate secondary antibodies for 60 mins at room temperature (1:500; Alexa Fluor goat anti-rabbit 594, A11037; Alexa Fluor goat anti-rabbit 488, A11008; Alexa Fluor goat anti-rat 594, A11007; Invitrogen, Waltham, MA) before mounting with DAPI Fluoromount-G (0100–20; SouthernBiotech, Birmingham, AL). Fluorescent images were captured with either an EVOS fluorescent microscope (ThermoFisher Scientific, Waltham, MA) or BZ-X800E fluorescent microscope (Keyence, Itasca, IL). Image analysis was performed using FIJI (ImageJ/Fiji, version 1.53o; National Institutes of Health, Bethesda, MD).