Figure 5: Two significantly down-regulated peptides in MHCC97-H chromatogram K9 (me1)STGGK(ac1)APR17 (left) and K9 (me0)STGGK(ac1)APR17(right) from MHCC97-H & HepG2, and MS/MS fragment spectrum K9 (me1)STGGK(ac1)APR17 (left) and K9 (me0)STGGK(ac1)APR17(right)for further validation.