c("strain: HUES 3Hb9::GFP", "day of collection: Day 21 GFP high", "treatment: SHH derived", "cell type: FACS-purified motor neurons")
c("strain: HUES 3Hb9::GFP", "day of collection: Day 21 GFP high", "treatment: S+P derived", "cell type: FACS-purified motor neurons")
c("strain: HUES 3Hb9::GFP", "day of collection: Day 21 no GFP", "treatment: S+P derived", "cell type: FACS-purified motor neurons")