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Karyotype and fluorescent in situ hybridization (FISH) analysis of T. vaginalis chromosomes. (A) Metaphase chromosome squashes of T. vaginalis reveal six chromosomes (I to VI). (B) FISH analysis using an 18S rDNA probe shows that all ~250 rDNA units localize to a single chromosome. (C) In contrast, the Tvmar1 transposable element (8) is dispersed throughout the genome.
