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Validation of the probes for the detection of marine pico-eukaryotes. (+)pCtrl include 0 mismatch strains labeled with FITC (green)(–)pCtrl are specificity controlled strains. Thin white arrows point at the location of unspecific labeling of (–)pCtrl control cells. DNA counterstaining is labeled by DAPI (blue). Scalebars indicate 2 μm.
