ST-0000177 Chr: Xptel Length(bp) 1896 scFISH probes Distance from Telomere (kb) 2,329.080 – 2,330.975 Competitor Recombinant probes’ estimated clone size: 175kb Approx distance of STS from telomere (kb) 324 [dpsc_display_product] Written by: Peter Rogan on August 25, 2009.on May 18, 2011. Posted in and tagged Xptel.