PROBLEM TO BE SOLVED: To find an effective crude drug in treatment of oral cancer, and to provide a therapeutic drug for oral cancer having the crude drug as an active ingredient.;SOLUTION: The crude drug having an invasion inhibitory function to oral cancer cells is found and an invasion inhibitor for oral cancer cells having the crude drug as an active ingredient and the therapeutic drug for oral cancer having the invasion inhibitor for oral cancer cells as an active ingredient are obtained.;COPYRIGHT: (C)2013,JPO&INPIT
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