The effect of retinoic acid on Ito cell proliferation and content of DNA and RNA

Table 1 ³H-TdR incorporation test

Group	Dosage (mol/L)	(CPM ± s)/well
Control		2866.4 ± 253.2
Test groups
RA	10-6	2657.6 ± 104.8
	10-5	1279.4 ± 236.4a
	10-4	182.2 ± 67.6a
RP	10-6	2598.4 ± 76.4
	10-5	1182.6 ± 154.4a
	10-4	897.2 ± 82.6a

^aP < 0.05 vs control group (Student’s t test).

Table 2 DNA, RNA content analysis

Group	Dosage (mol/L)	DNA	RNA
Control		101.98 ± 21.58	89.38 ± 22.03
RA	10-4	61.79 ± 18.31a	56.31 ± 14.72a
RP	10-4	46.85 ± 11.52a	49.20 ± 10.12a

^aP < 0.05 vs control group (Student’s t test).