c("cell line: LNCaP", "treatment: control")
c("cell line: LNCaP", "treatment: siCTCF")
c("cell line: LNCaP", "treatment: control/lane 3")
c("cell line: LNCaP", "treatment: siCTCF/lane 3")
c("cell line: LNCaP", "treatment: control/lane4")
c("cell line: LNCaP", "treatment: siCTCF/lane 4")