Exocrine GlandsSjogren's SyndromeLacrimal ApparatusSalivary GlandsParotid GlandSalivary Glands, MinorHarderian GlandPancreas, ExocrineRetinoblastoma-Binding Protein 4SyndromeSubmandibular GlandXerophthalmiaSialadenitisPancreasPropylbenzilylcholine MustardSialographyExocrine Pancreatic InsufficiencyLipParotitisTearsSalivary DuctsMammary Glands, AnimalPancreatic JuiceDacryocystitisMice, TransgenicImmunohistochemistryAmylasesAutoimmune DiseasesDry Eye SyndromesDown SyndromeMetabolic Syndrome XSweat GlandsAutoantibodiesMice, Inbred C57BLSublingual GlandPancreatic Function Tests