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Test samples: A. TPA, B. indometacin and C. betulin. A. Epythelial and gristly tissue with a deep and large oedema (HE x 200)-inflammation with croton oil, B. Epythelial gristly and muscular tissue with a discreet suephythelial inflammation (HE x 200), C. Epythelial gristly and muscular tissue with a discreet oedema, inflammatory subepithelial infiltrate and rare hyperemiate vessels (HE x 200) betulin treatment.
