Figure 2. Examples of the 4 subgroups divided by combining HER2 heterogeneity and Lauren classification (HE and IHC, ×50).
(A–D) Biopsy specimens. A, A’. HER2homogeneous/Laurenintestinal. B, B’. HER2heterogeneous/Laurenintestinal. C, C’. HER2homogeneous/Laurennon-intestinal. D, D’. HER2heterogeneous/Laurennon-intestinal. (E–H) Resected specimens. E, E’. HER2homogeneous/Laurenintestinal. F, F’. HER2heterogeneous/Laurenintestinal. G, G’. HER2homogeneous/Laurennon-intestinal. H, H’. HER2heterogeneous/Laurennon-intestinal.