ANPEP and ocular melanoma: The cecal acetate concentration was positively correlated with jejunal sucrase activities (p < 0.05; R2 = 0.428), jejunal APN activities (p < 0.05; R2 = 0.43), jejunal IAP activities (p < 0.05; R2 = 0.406) but negatively correlated with AID of DM (p < 0.05; R2 = −0.368) and AID of OM (p < 0.05; R2 = −0.371).