Exocrine GlandsLacrimal ApparatusSalivary GlandsSjogren's SyndromeParotid GlandHarderian GlandPancreas, ExocrineRetinoblastoma-Binding Protein 4Submandibular GlandPancreasPropylbenzilylcholine MustardSalivary Glands, MinorSialadenitisExocrine Pancreatic InsufficiencyPancreatic DuctsBile DuctsMammary Glands, AnimalPancreatic JuiceThoracic DuctImmunohistochemistryMice, TransgenicCommon Bile DuctSalivary DuctsAmylasesCystic DuctSweat GlandsPancreatic Function TestsSublingual GlandMice, Inbred C57BL