BCL6 and neoplasm: Consistent with the detection of Bcl‐6 at tumour‐associated TLSs (see Fig. 1e), Bcl6 expression was increased in gp130F/F antrum tissue suggesting the presence of germinal centre B cells or Tfh cells, and was also highly expressed in the tumours of gp130F/F mice (Figs. 3b and 3c).