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. 2012 Sep 14;7(9):e45321. doi: 10.1371/journal.pone.0045321

Figure 2. De novo monomethylation of H4K20 is essential for S2 cells. a.

Figure 2

, Cell viability. The graph shows the average ratio of each cell count to that of lacZ RNAi cells (n≧3). b, Cell cycle profiles. The number of S phase cells on day 4 is significantly increased in PR-Set7 cells (**; p = 0.022, t-Test) and not significantly changed in l(3)mbt cells (*; p = 0.336). Each error bar is two SDs. c, DNA contents on day 4. d, Blots of extracts from S2 cells after four days of RNAi treatment, probed with anti-phosphorylated Chk1 (p-Chk1).