. 2011 Dec 19;6(12):e29144. doi: 10.1371/journal.pone.0029144

Table 4. Condensed chromatin area and chromatin textural contrast in 1.0 mM VPA- treated HeLa cells.

Treatment		Sc%			AAR
time (h)	Drug	X	S	Md	X	S	Md
1	Untreated control	69.17	10.13	70.77^a	1.27	0.09	1.26^a
	VPA	44.53	22.93	45.57^b	1.36	0.13	1.34^b
2	Untreated control	68.53	14.52	70.65^a	1.25	0.08	1.24^a
	VPA	23.96	18.88	20.67^b	1.50	0.16	1.48^b
4	Untreated control	60.15	13.17	60.86^a	1.36	0.14	1.35^a
	VPA	53.20	17.86	56.93^b	1.34	0.12	1.32^a
24	Untreated control	57.75	14.84	59.91^a	1.35	0.14	1.32^a
	VPA	34.18	22.18	35.55^b	1.44	0.15	1.42^b

^a,b

, The median values of the VPA groups and their respective control for each treatment time differ significantly at the P _0.05 level (Mann-Whitney test); AAR, average absorption ratio; Md, median; S, standard deviation; Sc %, relative condensed chromatin area; VPA, valproic acid; X, arithmetic mean; n, 200