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1¡ËGovt. Reports Announcements & Index, NTIS/PB 89-215776 (1982).
2¡ËC.G.Shayneand and S.W.Carrol,"Statistics and Experimental Design For Toxicologists," Telford Press, 1986.
3¡Ëº´µ×´Ö¾¼"Ìô¸úɾ²Á­µ¡Ý·×²è¤È²òÀÏ¡Ý," ÅìµþÂç³Ø½ÐÈDzñ, 1977.
4¡ËÀе¿Ê"À¸ÊªÅý·×³ØÆþÌç," ÇÝÉ÷´Û, 1975.
5¡ËP.Grasso and R.H.Hinton, Mutation research, 248, 271-290 (1991).

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Correspondence
Authors:Koichi Hagita(Study director),
Ryota Tanaka, Nobuaki Watari, Akinori Shoji,
Hijiri Iwata, Kazuo Kobayashi
Biosafety Research Center, Foods, Drugs and Pesticides (An-Pyo Center)
582-2 Shioshinden Arahama, Fukude-cho, Iwata-gun, Shizuoka, 437-12, Japan
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