Table V.

Incidences of liver and bile duct tumors induced by BOP.

		Animals with tumors, n (%)
			Cholangiocellular tumors
Group	Treatment (no. of animals examined)	Hepatocellular adenoma	Adenoma	Adenocarcinoma	Total
1	BOP (34)	2 (6)	1 (3)	0 (0)	1 (3)
2	BOP+5% FBRA (30)	1 (3)	0 (0)	0 (0)	0 (0)
3	BOP+10% FBRA (29)	0 (0)	0 (0)	1 (3)	1 (3)
4	BOP→5% FBRA (30)	1 (3)	1 (3)	1 (3)	2 (7)
5	BOP→10% FBRA (29)	0 (0)	0 (0)	0 (0)	0 (0)

BOP, N-nitrosobis(2-oxopropyl)amine; FBRA, fermented brown rice by Aspergillus oryzae.