Wennberg, A Biologic effect of polyisobutylene on HeLa cells and on subcutaneous tissue in guinea pigs. [electronic resource] - Scandinavian journal of dental research 1974 - 613-7 p. digital Publication Type: Comparative Study; Journal Article ISSN: 0029-845X Standard No.: 10.1111/j.1600-0722.1974.tb01919.x doi Subjects--Topical Terms: AnimalsButanes--analysisChromium RadioisotopesCulture MediaEvaluation Studies as TopicGuinea PigsGutta-Percha--pharmacologyHeLa Cells--drug effectsPolyenes--administration & dosageRoot Canal Filling MaterialsSkin--drug effectsTime Factors