c("cell line: HeLa", "agent: Control", "biological replicate: 1")
c("cell line: HeLa", "agent: EGF", "biological replicate: 1")
c("cell line: HeLa", "agent: Control", "biological replicate: 2")
c("cell line: HeLa", "agent: Control", "biological replicate: 3")
c("cell line: HeLa", "agent: EGF", "biological replicate: 2")
c("cell line: HeLa", "agent: EGF", "biological replicate: 3")