Mononuclear Phagocyte SystemLymphatic SystemScrapieLymphoid TissuePrPSc ProteinsPrionsRickettsiaceae InfectionsCreutzfeldt-Jakob SyndromePrion DiseasesLymphatic DiseasesSpleenHistiocytesLymph NodesLymphomaNasal MucosaNasopharynxImmunoglobulin ALymphocytesBone MarrowSheepImmunohistochemistryPancreatic NeoplasmsB-LymphocytesT-LymphocytesNeoplasmsBrainMice, Inbred C57BLNeoplasms, Cystic, Mucinous, and SerousSkin NeoplasmsNeoplasms, Multiple PrimaryKidney NeoplasmsNeoplasms, Second PrimaryAdenocarcinoma, MucinousThyroid NeoplasmsMyeloproliferative DisordersDNA, NeoplasmLung NeoplasmsParotid NeoplasmsCystadenomaNeoplasms, Connective and Soft TissueNeoplasms, Plasma CellAppendiceal NeoplasmsLiver NeoplasmsCystadenoma, MucinousOvarian NeoplasmsEndocrine Gland NeoplasmsGastrointestinal NeoplasmsCarcinoma, Pancreatic DuctalNeoplasms, ExperimentalNeoplasms, Vascular TissueEye NeoplasmsNose NeoplasmsSalivary Gland NeoplasmsNeoplasms, Radiation-InducedAdenocarcinoma, PapillaryCarcinoma, PapillaryTesticular NeoplasmsNeoplasms, Muscle TissueNeoplasms, Glandular and EpithelialCystadenocarcinoma, MucinousAdenomaSoft Tissue NeoplasmsHematologic NeoplasmsNeoplasm ProteinsUterine NeoplasmsIntestinal NeoplasmsNeoplasms, Adnexal and Skin AppendageNeoplasm StagingVascular NeoplasmsSweat Gland NeoplasmsBone NeoplasmsPalatal NeoplasmsNeoplasms, Complex and MixedAntigens, NeoplasmMandibular NeoplasmsCystadenocarcinomaBile Duct NeoplasmsNeoplasm InvasivenessThymus NeoplasmsSplenic NeoplasmsHeart NeoplasmsCystadenoma, SerousColonic NeoplasmsMaxillary NeoplasmsTumor Markers, BiologicalDog DiseasesAnal Gland NeoplasmsNeoplasms, Germ Cell and EmbryonalBone Marrow NeoplasmsNeoplasms, Adipose TissueColorectal NeoplasmsMeningeal NeoplasmsDuodenal NeoplasmsAdrenal Cortex NeoplasmsMouth NeoplasmsMediastinal NeoplasmsTongue NeoplasmsIleal NeoplasmsStomach NeoplasmsUrinary Bladder Neoplasms