Must initiators come first? Tumorigenic and carcinogenic effects on skin of 3-methylcholanthrene and TPA in various sequences.

Abstract

Groups of hairless mice were treated with 4 skin applications of 470 nmol 3-methylcholanthrene (MCA) in benzene and 4 of 20 nmol 12-O-tetradecanoylphorbol-13-acetate (TPA) in various sequences, twice a week, together and separately. Three days after the last application, cell kinetic investigations were made comprising the counting of basal and suprabasal… (More)
DOI: 10.1038/bjc.1982.144

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