Figure 3From: A study of two Chinese patients with tetrasomy and pentasomy 15q11q13 including Prader-Willi/Angelman syndrome critical region present with developmental delays and mental impairment Cytogenomic array analysis showing copy number for chromosome 15q11q13 segment in patient 1. The lower portion of the figure shows array data from proximal chromosome 15q, and the upper portion represents the enlarged part of affected 15q11q13.Back to article page