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Localization of rDNA repeats and unique DNA fragments. (A) Clusters of 28S (green) and 5S (red) rDNA; (B) 28S rDNA (green) and unique DNA sequence R1 (red); (C) 28S rDNA (green) and unique DNA sequence R2 (red); (D) 28S rDNA (green) and unique DNA sequence R3 (red); (E) 28S rDNA (green) and unique DNA sequence R4 (red); (F) 28S rDNA (green) and unique DNA sequence R5 (red) in the M. lignano chromosomes. Metaphase chromosomes were stained with DAPI (blue).
