injection of ACSF (*n* = 0 mice, mean ± SD) and 00.0 µg HTT00000 (*n* = 0 mice, mean ± SD). Images are representative, results confirmed in separate images of all injected brains. *P* values calculated by unpaired *t*-test, *t* = 0.000, *df* = 0: ACSF versus HTT00000 activated microglia ipsilateral striatum