Fig. 6
From: Double chamber right ventricle in Williams syndrome: a rare cardiac anomaly reported
FISH study using a unique sequenced probe that hybridizes to the elastin gene on Chromosome 7q11.23. The elastin probe is labeled in red and the control probe on chr. 7 is labeled in green. Large arrowhead shows a normal chromosome with both red and green signals for elastin region and control probe, whereas small arrowhead shows only two green signals for the control probes which corresponds to 7q11.23 deletion