Chromatin - metabolism, Mutagens - toxicity, Okadaic Acid - analysis, Humans, Environmental Monitoring - methods, Transcriptome, Carcinogens - isolation & purification, Mutagenicity Tests - methods, Carcinogens - analysis, Sequence Analysis, DNA, Carcinogens - toxicity, Animals, Mutagens - isolation & purification, Okadaic Acid - toxicity, Mytilus - genetics...