title: Secretory cells in the medulla of the bursal follicle: the small lymphocyte-like cells are precursors of the secretory cells.
mesh_terms: D000818:Animals; D002060:Bursa of Fabricius / Q000276:immunology / Q000378:metabolism* / Q000648:ultrastructure; D002454:Cell Differentiation; D002462:Cell Membrane / Q000648:ultrastructure; D002467:Cell Nucleus / Q000648:ultrastructure; D002645:Chickens; D003520:Cyclophosphamide / Q000494:pharmacology; D003593:Cytoplasm / Q000648:ultrastructure; D008214:Lymphocytes / Q000276:immunology / Q000378:metabolism* / Q000648:ultrastructure; D008215:Lymphocytes, Null / Q000276:immunology / Q000378:metabolism / Q000648:ultrastructure; D008938:Mitosis
chemical_list: D003520:Cyclophosphamide