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

Table 3. Condensed chromatin area and chromatin textural contrast in 0.5 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	41.30	21.91	41.76^b	1.39	0.16	1.36^b
2	Untreated control	68.53	14.52	70.65^a	1.25	0.08	1.24^a
	VPA	30.51	20.73	31.11^b	1.44	0.15	1.43^b
4	Untreated control	60.15	13.17	60.86^a	1.36	0.14	1.35^a
	VPA	49.52	21.42	56.41^b	1.39	0.15	1.38^a
24	Untreated control	57.75	14.84	59.91^a	1.35	0.14	1.32^a
	VPA	42.31	22.42	47.41^b	1.38	0.15	1.34^a

^a,b

, The median values of the VPA groups and their respective control for each treatment time differ significantly from each 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