title: The use of ethylene maleic anhydride for the preparation of a water-soluble polyanionic derivative of pepsin. Preparation and properties.
mesh_terms: D000812:Anhydrides; D005030:Ethylenes; D006863:Hydrogen-Ion Concentration; D008298:Maleates; D010434:Pepsin A / Q000031:analogs & derivatives* / Q000138:chemical synthesis / Q000378:metabolism; D011108:Polymers
chemical_list: D000812:Anhydrides; D005030:Ethylenes; D008298:Maleates; D011108:Polymers; D010434:Pepsin A