c("cell line: HKC L1", "differentiation day: 0", "cell type: Keratinocytes")
c("cell line: HKC L1", "differentiation day: 4", "cell type: Keratinocytes")
c("cell line: HKC L1", "differentiation day: 2", "cell type: Keratinocytes")
c("cell line: HKC L1", "differentiation day: 7", "cell type: Keratinocytes")
c("cell line: HKC L2", "differentiation day: 0", "cell type: Keratinocytes")
c("cell line: HKC L2", "differentiation day: 4", "cell type: Keratinocytes")
c("cell line: HKC L2", "differentiation day: 7", "cell type: Keratinocytes")
c("cell line: HKC L2", "differentiation day: 2", "cell type: Keratinocytes")