Biologic samples. Patients are identified by their unique patient number (UPN). For each sample, the type (LN indicates lymph node; PB, peripheral blood; BM, bone marrow; and PF, peritoneal fluid), the time from diagnosis (Time diag), and the presence (+) or absence (−) of somatic mutations (Mut) and intraclonal variations (ICVs) are given. Histo indicates LN histology. Paired samples obtained at the same time point (at time intervals shorter than 1 month) are boxed together. The table is divided into 2 groups, the first (patient nos. 44 to 1328) including the cases for which at least 2 LN biopsies were compared.