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                 |   Mixed 
                Acinus   
                Mixed secretion, demilunes serous on mucous acinus, secretion, 
                in its majority, is glycoproteic, viscous, flat nucleus and lightly 
                basophilic cytoplasm. MA: 
                Mixed acinus FN: 
                Flat nuclei DS: 
                Demilunes Serous D: 
                Excretion duct       |