Microarray Analysis of Microcystin-LR

Microcystins are produced by the cyanobacteria, most commonly Microcystis aerµginosa. Upon ingestion, toxic microcystins are actively absorbed by fish, birds and mammals where they are primarily liver toxins. Groups of 4-6 rats were exposed to 0, 1, 10, 50 or 100 µg/kg microcystin-LR for 0.5, 1, 3 or 6 hours and gene expression analysis performed on liver with samples hybridized to whole rat genome RG230_2.0 GeneChip arrays (Affymetrix, CA).