QuailCoturnixColinusChick EmbryoChimeraBird DiseasesOviductsFeathersChickensOvomucinEmbryo, NonmammalianDucksAvian ProteinsOncogene Protein p55(v-myc)BirdsGalliformesBlastodermEgg ShellNeural CrestCloacaAvian Sarcoma VirusesEgg ProteinsAlpharetrovirusAvian leukosis virusInfluenza in BirdsOvipositionMesodermPigmentation