Fig. 3From: Trisomy Xp and partial tetrasomy Xq resulting from gain of a rearranged X chromosome in a female fetus: pathogenic or not?FISH analysis with subtelomere (yellow) and satellite DNA (red) probes. a: Two normal X chromosomes showed positive staining and der(X) showed negative staining. b: Der(X) chromosome showed an extra signalBack to article page