Fig. 4From: Aggressive NK-cell leukemia in a 69 years old Caucasian woman: a case reportMolecular analysis of TCRdelta gene rearrangements in peripheral blood; Two prominent peaks are identified in fragment sizes 169 base pairs and 196 base pairs, respectively. The double-peak appearance is caused by DNA polymerase-catalyzed addition of nontemplated extra nucleotidesBack to article page