c("cell type: macrophage", "treatments: M-CSF", "donor: Donor1")
c("cell type: macrophage", "treatments: M-CSF", "donor: Donor2")
c("cell type: macrophage", "treatments: M-CSF + IL27", "donor: Donor1")
c("cell type: macrophage", "treatments: M-CSF + IL27", "donor: Donor2")