In contrast, ALK+ ALCL had the highest lamin B1 expression (mean intensity value 219,675,000 vs mean intensity values 142,970,750, 152,759,000 and 183,119,500 in ALK− ALCL, cHL and T‐cell‐derived cHL, respectively), suggesting relatively soft and flexible nuclei in ALK+ ALCL (Figure 5) compared with the other cell lines. Here, ALK is linked to anaplastic large cell lymphoma.