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. Author manuscript; available in PMC: 2008 Mar 18.
Published in final edited form as: Proc Soc Exp Biol Med. 1999 Apr;220(4):239–243. doi: 10.1046/j.1525-1373.1999.d01-41.x

Table I.

Inhibitory Effects of Green Tea and Black Tea Against IQ-Induced Aberrant Crypt Foci Using Initiation, Post-Initiation, and Continuous Exposure Protocols

Treatment group Number with ACF/total number rats Tea exposure protocol ACF per colon (mean ± SD) ACF/ACF-bearing animal (mean ± SD)
IQ 10/14 none 1.7 ± 1.73 2.40 ±1.58
8/15 continuous 1.6 ± 1.88 3.00 ±1.51
IQ+GT 3/15 initiation 0.2 ± 0.41** 1.00 ± 0.00*
15/15 post-initiation 4.5 ± 2.72 4.47 ± 2.72
5/15 continuous 0.7 ±1.39* 2.20 ± 1.64
IQ+BT 5/15 initiation 0.5 ± 0.92* 1.60 ± 0.89*
8/14 post-initiation 0.9 ± 0.95* 1.50 ± 0.76

Note. IQ, 2-amino-3-methylimidazo[4,5-f]quinoline; GT, green tea (2% w/v); BT, black tea (2% w/v); P < 0.05* or 0.01** by Students t test versus controls given IQ alone.