Parallel line assay with successive adjustment of doses.
D000818:Animals; D001681:Biological Assay; D006168:Guinea Pigs; D006632:Histamine; D006801:Humans; D007082:Ileum / Q000187:drug effects; D008433:Mathematics; D008962:Models, Theoretical; D004364:Pharmaceutical Preparations / Q000008:administration & dosage*
D004364:Pharmaceutical Preparations; D006632:Histamine