Figure 2From: Combined 22q11.1-q11.21 deletion with 15q11.2-q13.3 duplication identified by array-CGH in a 6 years old boy FISH analysis of the proband using a probe (labeled red) specific for DiGeorge Syndrome critical region (TUPLE). A single red signal (white arrow) can be seen on the normal chromosome 22, while the red signal is absent on the chromosome 22 with the deletion. Two green signals are seen on the subtelomeres of both homologues (control probe).Back to article page