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. 2016 Jul 14;6:29714. doi: 10.1038/srep29714

Figure 1. Tel-FISH in PETs.

Figure 1

Cases depicted in panels A–C were selected due to loss of expression of ATRX and DAXX as a surrogate marker of ALT positivity; these cases presented large, ultrabright and unbalanced size telomere FISH signals (marked by the arrows), a phenotype indicative of ALT. Panels D–F, represent TERTp mutated cases 1, 3 and 4, respectively. In these cases, although some robust telomeres were present, we did not detect ultra-bright foci and the telomeres were balanced in size. One of the TERTp mutated cases was excluded from this analysis (case 2) for technical reasons, since no Tel-FISH signal was detected.