MUC5AC and chronic pancreatitis: Single‐cell RNA sequencing analysis showed Acta2, the gene encoding for aSMA, expression mainly in pericytes, mucin‐ductal, and fibroblast cells during chronic pancreatitis (Figure 2G); however, when analyzed by IHC (Figure 2H) in both WT and CD73−/− mice, aSMA protein expression was not detected in fibroblasts; however, aSMA expression was clearly observed in small vessels (black arrows) and mucin‐ductal structures (yellow arrow), suggesting little or undetected activation of stellate cells in this experimental mouse model of chronic pancreatitis by the above‐mentioned technique.