title: Mesenchymal origin of bursal lymphoid cells in Japanese quails.
mesh_terms: D000818:Animals; D002060:Bursa of Fabricius / Q000196:embryology*; D004625:Embryo, Nonmammalian; D008214:Lymphocytes / Q000166:cytology*; D011784:Quail / Q000196:embryology*; D013997:Time Factors