title: Extraction, fractionation, and testing of a homogenous thymic hormone preparation.
mesh_terms: D000641:Ammonia; D000645:Ammonium Sulfate; D000818:Animals; D005374:Filtration; D008198:Lymph Nodes / Q000032:analysis; D008722:Methods; D051381:Rats; D013154:Spleen / Q000032:analysis; D013464:Sulfuric Acids; D013949:Thymus Extracts / Q000302:isolation & purification*; D013950:Thymus Gland / Q000032:analysis; D014020:Tissue Extracts
chemical_list: D013464:Sulfuric Acids; D013949:Thymus Extracts; D014020:Tissue Extracts; D000641:Ammonia; D000645:Ammonium Sulfate