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Double-FISH with18S rDNA (red) and 5S rDNA (green) probes and MM/DAPI fluorochromes staining in the chromosomes of Thalassoma noronhanum (a), Halichoeres penrosei (b), Halichoeres poeyi (c), Halichoeres radiatus (d) and Halichoeres brasiliensis (e). Asterisks indicate the chromosome pairs with 18S/5S rDNA arrays. Bar: 5 μm.
