Figure 5.
Experimental protocol for investigating the chemopreventive ability of C3G-HB in NNK-induced lung tumorigenesis in A/JCr mice. NNK (100 mg/kg body weight/mouse) or saline was injected three weeks after the adaptation period; n = 5 in saline-injected groups, naive and control, and n = 10 in NNK-injected groups (no-C3G-HB, pre-C3G-HB, conti.-C3G-HB and post-C3G-HB). No-C3G-HB, not given C3G-HB supplemented diet; Pre-C3G-HB, C3G-HB supplemented diet only before NNK injection; Conti.-C3G-HB, C3G-HB supplemented diet continuously before and after NNK injection; Post-C3G-HB, C3G-HB supplemented diet only after NNK injection.