Semion, I Z Antinociceptive action of the SP1-4 tetrapeptide and of some tuftsin analogs. [electronic resource] - Polish journal of pharmacology and pharmacy - 393-401 p. digital Publication Type: Journal Article; Research Support, Non-U.S. Gov't ISSN: 0301-0244 Subjects--Topical Terms: AnalgesiaAnimalsAnti-Inflammatory Agents, Non-Steroidal--chemical synthesisChemical PhenomenaChemistryInjections, IntraventricularMaleOligopeptides--chemical synthesisPeptide Fragments--pharmacologyRatsRats, Inbred StrainsSubstance P--pharmacologyTuftsin--analogs & derivatives