Beer, A M The influence of fulvic and ulmic acids from peat, on the spontaneous contractile activity of smooth muscles. [electronic resource] - Phytomedicine : international journal of phytotherapy and phytopharmacology Oct 2000 - 407-15 p. digital Publication Type: Journal Article ISSN: 0944-7113 Standard No.: 10.1016/S0944-7113(00)80062-8 doi Subjects--Topical Terms: AnimalsBenzopyrans--pharmacologyDopamine Agonists--pharmacologyGuinea PigsHumic Substances--pharmacologyMuscle Contraction--drug effectsMuscle, Smooth--drug effectsPlant Extracts--pharmacologyReceptors, Dopamine--drug effectsSoil