Flow cytometric analysis of ventral midbrain isolates and gating scheme for isolating mononuclear cells from Naïve, AAV2-GFP, and AAV2-SYN transduced red/green mice. Mononuclear cells were gated on forward (FSC) and side scatter (SSC), live cells (Live/Dead), and CD45+ expression. Gating was designed to distinguish two distinct populations of cells: (Myeloid) a CD45+ CD11b expressing population which are myeloid, and (D) a CD45+, CD4 expressing population which are T cells. (A) Isolation of the CD45+, CD11b+ myeloid population reveals (B) two distinct gates of resident microglia which are CX3CR1-GFPhi and infiltrating monocytes which are CCR2-RFP+. (C) Further gating of CCR2-RFP+ monocytes indicate that the monocytes are Ly6C+. Cells that were Ly6G+ were excluded from analysis (not shown).