Biological - genetics, Signal Transduction - drug effects, Proteomics - methods, Colonic Neoplasms - metabolism, Colonic Neoplasms - chemically induced, Toxicogenetics - methods, Tumor Markers, Biological - metabolism, Colonic Neoplasms - genetics, Carcinogens - pharmacology, Protein Interaction Maps - drug effects, Cadmium - adverse effects, Nickel - advers...