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Figure 5 | BMC Cancer

Figure 5

From: Induction of lung lesions in Wistar rats by 4-(methylnitrosamino)-1-(3-pyridyl)-1-butanone and its inhibition by aspirin and phenethyl isothiocyanate

Figure 5

Expression of COX-2 and PCNA in preneoplastic lung lesions of Wistar rats exposed to NNK. A and B show immunohistochemical staining for COX-2 and PCNA in normal lung tissues of rats. A, COX-2; B, PCNA. C and D show immunohistochemical staining for COX-2 and PCNA in alveolar hyperplasia of NNK-treated Wistar rats. C, COX-2; D, PCNA. E and F show immunohistochemical staining for COX-2 and PCNA in alveolar dysplasia of NNK-treated Wistar rats. E, COX-2; F, PCNA. Magnification × 200.

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