Results of the 244 K oligonucleotide Agilent array in case RX1. A: A graph representation of the 244 K Agilent oligonucleotide array for case RX1 demonstrates a gain in copy number of probes covering the pericentromeric region of chromosome band Xp11. B: The chromosome band Xp11 is enlarged and shows two segments of log2 values: area 1 and area 2. C: Red signal from RP11-383C12 corresponding to AR locus can be found on both the structurally normal X chromosome and ring X in the 46,X,r(X) cell line. D: An interphase demonstrating tandem duplication of RP11-258C19 and RP11-465B24 on the derivative X chromosome.