Herbalism, botany and components analysis study on original plants of frankincense Absorption of 3-acetyl-11-keto-β-boswellic acid in Caco-2 cells and MDCK cell models Chemical constituents of antiasthmatic fraction in gelatinous resin of Boswellia carterii Cembrane diterpenes in olibanum Chemical constituents from frankincense Research progress in boswellic acids from medicinal plants in Boswellia Roxb. ex Colebr. and their pharmacological action as well as mechanisms Determination of five boswellic acids in Boswellia serrata