title: Localization of thymocyte stem cell precursors in the pharyngeal endoderm of early amphibian embryos.
mesh_terms: D000818:Animals; D002454:Cell Differentiation; D004707:Endoderm / Q000166:cytology*; D005880:Gills / Q000196:embryology; D006412:Hematopoietic Stem Cells; D011894:Rana pipiens / Q000196:embryology*; D013601:T-Lymphocytes; D013950:Thymus Gland / Q000196:embryology