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Quantitative fluorescence in situ hybridization tests of CSP cell telomere length. A: Z-stack images and Z-projection images for K562 and 1301 cell telomeres (top); calibration curve of absolute telomere length using leukemia cell lines with known telomere lengths (bottom). kbp, kilo-base pair. B: Z-stack images and Z-projection images for CSP cell telomeres (top); comparison of telomere lengths of CSP cells on both PDMS substrates (bottom). *P < 0.05.
