c("cell type: primary macrophages", "treatment: none", "barcode: CGATGT")
c("cell type: primary macrophages", "treatment: co-culture with fibroblast", "barcode: CAGATC")
c("cell type: primary macrophages", "treatment: TNF", "barcode: AGTCAA")
c("cell type: primary macrophages", "treatment: TNF + co-culture with fibroblast", "barcode: GTGAAA")