QuailCoturnixColinusWorld HealthWorld Health OrganizationChick EmbryoWorld War IIChimeraBird DiseasesFeathersOviductsChickensOvomucinEmbryo, NonmammalianDucksBirdsAvian ProteinsOncogene Protein p55(v-myc)GalliformesBlastodermWorld War ISpecies SpecificityEgg ShellCercopithecidaeNeural CrestCloacaPlatyrrhiniAvian Sarcoma VirusesMolecular Sequence DataEgg ProteinsAlpharetrovirusInfluenza in BirdsDeveloping CountriesPhylogenyAvian leukosis virusOvipositionPigmentationCebidaeMesoderm