SELPLG and anaplastic large cell lymphoma: By using a semiquantitative IHC approach that considered both intensity and distribution of the staining (Figure S3A), PSGL-1 resulted variably expressed in PTCLs, NOS samples, whilst an almost constant membrane expression has been detected in ALCL tissues (Figure S3B), showing a higher average expression intensity in comparison with AITLs and PTCLs, NOS (Figure 1B).