Cancer prevention.
D006801:Humans; D007213:Indomethacin / Q000009:adverse effects; D015474:Isotretinoin; D009369:Neoplasms / Q000517:prevention & control*; D009955:Ornithine Decarboxylase / Q000378:metabolism; D012107:Research Design; D014212:Tretinoin / Q000009:adverse effects
D014212:Tretinoin; D009955:Ornithine Decarboxylase; D015474:Isotretinoin; D007213:Indomethacin