Abstract
Introduction to the practical application of new medicinal plants is an important task of modern medicine and pharmacy. This research presents the results of the histochemical study of raw materials of Prunella vulgaris, collected in the flowering phase on the territory of the Ulytau mountains (Ulytau region, Republic of Kazakhstan). The aim of the study is to determine the features of localization of individual groups of secondary metabolites in the aerial part of Prunella vulgaris at the microscopic level. Histochemical analysis of leaves, inflorescences and stems of Prunella vulgaris will allow to establish the localization in tissues of such biologically active substances as essential oil, sesquiterpene lactones, flavonoids, phenolic compounds, polysaccharides. For the first time, localization of secondary metabolites was studied by histochemical tests using light microscopy in the tissues of Prunella vulgaris. The results of histochemical studies can be used to confirm the authenticity, identification and standardization of the above-ground part of Prunella vulgaris.