PubMed Central, Figure 2: J Med Genet. 2007 July; 44(7): 452–8. Published online 2007 March 30. doi: 10.1136/jmg.2006.047092.

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FISH analysis of the duplication, showing three specific 7q11-probe sites on interphase cells (A) and two hybridization spots on metaphase chromosomes (B). The normal signal is indicated by arrowheads and the duplication by arrows. Magnification x 1000.