AS-PCR assay. PCR products were separated on 3% agarose gel electrophoresis, and for each sample, the wild-type (WT) and the mutant (MUT) allele were amplified. (A) Archival Giemsa-stained BM slides samples. (B) WM mutated cases presenting both the wild-type and the mutant allele. (C) Mutated and wild-type cases of SMZL and B-CLPD. A WM sample with MYD88 (L265P) mutation was used as a positive control, and a healthy donor was used as a negative control.