Brain cells were obtained from new born mice (<2-week-old) using a Neural Tissue Dissociation Kit (P) (Milteny Biotec, Cologne, Germany), treated with CD11b antibody-conjugated microbeads (Milteny Biotec), and then isolated by magnetic cell sorting as CD11b+ cells, as previously described6 (link). The isolated cells were plated on poly-D-Lysine (PDL)-coated 96-well plates (BD Biosciences, CA, USA), and then cultured in DMEM/F12 (Gibco, CA, USA) with 10% fetal bovine serum (FBS; Gibco) containing 100 U/ml of penicillin/streptomycin (Sigma-Aldrich, MO, USA).
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