1. Hagiwara, A., Miyashita, K., Yoshino, H., Sano, M., Tamano, S., Koda, T., Nakamura, M., Imaida, K., Shirai, T.: Four-week feeding study of Kusagi color, a natural blue food colorant, in F344 rats. Jpn J Fd Chem, 8: 174-179, 2001.

2. Ogawa, K., Hirose, M., Sugiura, S., Cui, L., Imaida, K., Ogiso, T., Shirai, T.: Dose-dependent promotion by phenylethyl isothiocyanate, a known chemopreventer, of two-stage rat urinary bladder and liver carcinogenesis. Nutr Cancer, 40: 134-139, 2001.

3. Tamano, S., Hagiwara, A., Kawabe, M., Sano, M., Tanaka, H, Imaida, K., Shirai, T., Ito, N.: Summary of test results of medium-term carcinogenesis bioassays targeting the liver or multi-organs. Toxicol Pathol, 29(Suppl.): 320-322, 2001.

4. Tamano, S., Hatahara, Y., Sano, M., Hagiwara, A., Nakamura, M., Washino, T., Imaida, K.: 13-week oral toxicity and 4-week recovery study of enzymatically modified isoquecitrin in F344/DuCrj rats Jpn. J Fd Chem., 8: 161-167, 2001.

5. Hokaiwado, N., Asamoto, M., Cho, YM., Imaida, K., Shirai, T.: Frequent c-Ha-ras gene mutations in rat mammary carcinomas induced by 2-amino-1-methyl-6-phenylimidazo[4,5-b]pyridine. Cancer Lett, 163: 187-190, 2001.

6. Imaida, K., Tamano, S., Kato, K., Ikeda, Y., Asamoto, M., Takahashi, S., Nir, Z., Murakoshi, M., Nishino, H., Shirai, T.: Lack of chemopreventive effects of lycopene and curcumin on experimental rat prostate carcinogenesis. Carcinogenesis, 22: 467-472, 2001.

7. Hagiwara A, Miyashita K, Nakanishi T, Sano M, Tamano S, Asai I, Nakamura M, Imaida K, Ito N, Shirai, T.: Lack of tumor promotion effects of carrageenan on 1,2-dimethylhydrazine-induced colorectal carcinogenesis in male F344 rats. J Toxicol Pathol, 14: 37-43, 2001.

8. Ogawa, K., Nakanishi, H., Takeshita, F., Futakuchi, M., Asamoto, M., Imaida, K., Tatematsu, M., Shirai, T.: Establishment of rat hepatocellular carcinoma cell lines with differing metastatic potential in nude mice. Int J Cancer, 91: 797-802, 2001.

9. Watanabe, N., Okochi, E., Hirayama, Y., Shimada, Y., Yanagihara, K., Yoshida, MC., Takahashi, S., Mochizuki, M., Sugimura, T., Nagao, M., Ushijima, T.: Single nucleotide instability without microsatellite instability in rat mammary carcinomas. Cancer Res, 61: 2632-2640, 2001.

10. Thamavit, W., Pratoomtone, P., Kongtim, S., Shirai, T., Ito, N.: Inhibition by vitamin E of cholangiocarcinoma induction due to combined nitrite and aminopyrine. Asian Pac J Cancer Prev, 2: 69-70, 2001.

11. Kimoto, N., Hirose, M., Futakuchi, M., Iwata, T., Kasai, M., Shirai, T.: Site-dependent modulating effects of conjugated fatty acids from safflower oil in a rat two-stage carcinogenesis model in female Sprague-Dawley rats. Cancer Lett, 168: 15-21, 2001.

12. Hirose, M., Hoshiya, T., Mizoguchi, Y., Nakamura, A., Akagi, K., Shirai, T.: Green tea catechins enhance tumor development in the colon without effects in the lung or thyroid after pretreatment with 1,2-dimethylhydrazine or 2,2′-dihydroxy-di-n-propylnitrosamine in male F344 rats. Cancer Lett, 168: 23-29, 2001.

13. Hagiwara, A., Takesada, Y., Tanaka, H., Tamano, S., Hirose, M., Ito, N., Shirai, T.: Dose-dependent induction of glandular stomach preneoplastic and neoplastic lesions in male F344 rats treated with catechol chronically. Toxicol Pathol, 29: 180-186, 2001.

14. Tatsura, H., Ogawa, K., Sakata, T., Okamura, T.: A nested variant of transitional cell carcinoma of the urinary bladder: a case report. Jpn J Clin Oncol, 31: 287-289, 2001.

15. Asamoto, M., Hokaiwado, N., Cho, YM., Takahashi, S., Ikeda, Y., Imaida, K., Shirai, T.: Prostate carcinomas developing in transgenic rats with SV40 T antigen expression under probasin promoter control are strictly androgen dependent. Cancer Res, 61: 4693-4700, 2001.

16. Asamoto, M., Hokaiwado, N., Cho, YM., Ikeda, Y., Takahashi, S., Shirai, T. : Metastasizing neuroblastomas from taste buds in rats transgenic for the simian virus 40 large T antigen under control of the probasin gene promoter. Toxicol Pathol, 29: 363-368, 2001.

17. Imaida, K., Sano, M., Tamano, S., Asamoto, M., Ogawa, K., Futakuchi, M., Shirai, T.: Organ dependent enhancement of rat 3,2′-dimethyl-4-aminobiphenyl (DMAB) carcinogenesis by 2-amino-1-methyl-6-phenyl- imidazo[4,5-b]pyridine (PhIP): positive effects on the intestine but not the prostate. Carcinogenesis, 22: 1295-1299, 2001.

18. Hagiwara, A., Miyashita, K., Nakanishi, T., Sano, M., Tamano, S., Kadota, T., Koda, T., Nakamura, M., Imaida, K., Ito, N., Shirai, T.: Pronounced inhibition by a natural anthocyanin, purple corn color, of 2-amino-1-methyl-6-phenylimidazo[4,5-b]pyridine (PhIP)-associated colorectal carcinogenesis in male F344 rats pretreated with 1,2-dimethylhydrazine. Cancer Lett, 171: 17-25, 2001.

19. Shimizu, K., Iida, M., Takahashi, S.: Hodgkin’s disease producing granulocyte colony stimulating factor. Am J Hematol, 68: 134, 2001.

20. Mori, T., Imaida, K., Tamano, S., Sano, M., Takahashi, S., Asamoto, M., Takeshita, M., Ueda, H., Shirai, T.: Beef tallow, but not perilla or corn oil, promotion of rat prostate and intestinal carcinogenesis by 3,2′-dimethyl-4-aminobiphenyl. Jpn J Cancer Res, 92: 1026-1033, 2001.

21. Imaida, K., Kuzutani, K., Wang, J., Fujiwara, O., Ogiso, T., Kato, K., Shirai, T.: Lack of promotion of 7,12-dimethhylbenz[a]anthracene-initiated mouse skin carcinogenesis by 1.5 GHz electromagnetic near fields. Carcinogenesis, 22: 1837-1841, 2001.

22. Ito, N.: Genetically modified foods – hazard identification and risk assessment. J Toxicol Pathol, 14: 327-329, 2001.