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STAT3 levels in 4-NQO-induced dysplasia. Photomicrographs of the dysplastic lesions with the median immunostain score for each group, occurring in tongues of animals from the vehicle (A), erlotinib (B) and guggulipid (C)-treated groups stained for STAT3. D. Graphical description of immunostain scores for each group (p= 0.11 for vehicle versus erlotinib and p = 0.41 for vehicle versus guggulipid).
