DNMT1 and colorectal adenocarcinoma: Here, we performed multicolor immunohistochemical staining of p38γ (teal), DNA‐methyltransferase 1 (DNMT1; purple), and T‐ and B‐cell lineage markers CD4 (yellow) and CD20 (purple) using a Ventana Discovery Ultra system (Figure 1A‐D) on six swollen reactive regional LNs derived from a 47‐year‐old woman with a diagnosis of colorectal adenocarcinoma.