Fig. 1From: Correlation between deletion of the CDKN2 gene and tyrosine kinase inhibitor resistance in adult Philadelphia chromosome-positive acute lymphoblastic leukemiaRepresentative of fluorescence images in situ hybridization. a Normal cells presented with double green and red signals; b hemizygous cells presented with loss of one red signal; c homozygous cells presented with a loss of both red signals (p16) and only retained with two green signals (chromosome 9); d red and green signal fusion (BCR/ABL+)Back to article page