Fig. 1From: Karyotyping of circulating tumor cells for predicting chemotherapeutic sensitivity and efficacy in patients with esophageal cancerImages of CTCs with different ploidies of chromosome 8. (a) triploidy, (b) tetraploidy, (c) pentaploidy, and (d) > 5 copies. Nuclei of CTCs were stained with 4′, 6-diamidino-2-phenylindole (blue) and the chromosome 8 was identified by centromere probe 8 Spectrum Orange probe (red dots). Scale bar = 5 μmBack to article page