Bone marrow and peripheral-blood specimens of 24 PCNSL patients were examined using polymerase chain reaction (PCR) for analysis of clonally rearranged immunoglobulin heavy-chain (IgH) genes.
To elucidate the histogenesis of PCNSL, we analyzed the source of the cells from its variable region (VH) sequences using the polymerase chain reaction (PCR) method to amplify the immunoglobulin heavy chain (IgH) gene of DNA extracted from paraffin sections.