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. 2012 Oct 5;12:198. doi: 10.1186/1471-2148-12-198

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Copyright ©2012 Nakajima et al.; licensee BioMed Central Ltd.

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Fluorescencein situhybridization of 5S rDNA sequences to metaphasic chromosomes of Neotropical cichlids. The 5S rDNA sequences were detected with FITC (green), the chromosomes were counterstained with DAPI, and the images were converted to grayscale. (a) Retroculus lapidifer, (b) Astronotus ocellatus, (c) Cichla piquiti, (d) Geophagus proximus, (e) Satanoperca jurupari, (f) Aequidens tetramerus, (g) Laetacara dorsigera, (h) Heros efasciatus, (i) Mesonauta festivus. The arrowheads indicate the 5S rDNA-bearing chromosomes, and the asterisks mark the chromosomes bearing two sites. Bar = 5 μm.