CHAT and cancer: Quantitative analysis of the cholinergic subpopulation in the myenteric plexus showed that the presence of cancer caused a marked decrease in the number of ChAT-immunoreactive cell bodies compared to control in the jejunum (p = 0.0002; S2 Fig) and ileum (p = 0.0277; S1 Fig), with values of 37.2% and 13.8%, respectively (Table 4).