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. 2012 Dec 26;7(12):e51967. doi: 10.1371/journal.pone.0051967

Figure 6. Long-term nicotine exposure increases tumorigenicity.

Figure 6

A) Fluorescent whole-body imaging of nude mice each injected with 5 k of either control or 1 mM-nicotine-treated HN-1 cells overexpressing RFP. B) Photographs and weights of tumors dissected from mice 54 days post-injection.