Fig. 4

IGH PCR analysis of both specimens revealed a shared pattern of peaks. a Primers for FR2 region identified a clonal peak at approximately 281 bp in the skin and the lymph node. b Similarly, a reproducible peak at approximately 115 bp was identified with primers targeting the FR3 region of IGH. An additional 94 bp peak was identified in a polyclonal background in the skin but not lymph node specimen