title: Chemical modification of spleen permeability factor.
mesh_terms: D000596:Amino Acids; D000818:Animals; D001224:Aspartic Acid; D002845:Chromatography; D004586:Electrophoresis; D005971:Glutamates; D008623:Mercaptoethanol; D011506:Proteins; D051381:Rats; D013154:Spleen; D013329:Structure-Activity Relationship; D013552:Swine; D014020:Tissue Extracts; D014508:Urea
chemical_list: D000596:Amino Acids; D005971:Glutamates; D011506:Proteins; D014020:Tissue Extracts; D001224:Aspartic Acid; D008623:Mercaptoethanol; D014508:Urea