Positive control hybridizations. (Upper left panel) Specificity for L. anguillarum with the multiplex PCR and microarray hybridization. Genotypes for R-82 (O1), ATCC 43305 (O1), and ATCC 43306 (O2) match the respective genotypes for rpoN and fatA. (Upper right panel and lower left panel) Hybridization with probes complementary to V. vulnificus (cyt), V. parahaemolyticus (gyrB and toxR), P. damselae (ureC and dly), and A. salmonicida (vapA and A.plas.) in four different PCRs. (Lower right panel) Positions of oligonucleotide probes and the biotin control on the microarray.