title: The regulation of the T-lymphocytes precursor pool by a humoral factor released by the thymus.
mesh_terms: D000818:Animals; D000906:Antibodies / Q000494:pharmacology; D000917:Antibody Formation; D002454:Cell Differentiation; D051379:Mice; D008819:Mice, Nude; D013601:T-Lymphocytes / Q000166:cytology / Q000502:physiology*; D013950:Thymus Gland / Q000276:immunology / Q000502:physiology*
chemical_list: D000906:Antibodies