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Organization of P. piscicida and prokaryotic rRNA genes and locations of the molecular probes used in this study. The primers for P. piscicida species-specific PCR (NTS2F, NTS3R, and NTS4R) and for ALH fingerprinting and cloning (protists, Pro18Sf and DA436r; eubacteria, Bact27f and Bact355r) are in panels A and B, respectively.
