TGFB1 and autoimmune pancreatitis: Notably, the proportion of TGFB1‐positive macrophages in the pancreatic tissues of type 1 AIP patients was significantly higher compared to that of type 2 AIP patients (p = 0.00056, right part of Figure 5K) and paracarcinoma tissue (controls, p = 0.00016, right part of Figure 5K).