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In pastoral and rearward area of Rangpur division, Bangladesh, a number of plants are universally used as herbal medicine for the treatment of infectious diseases. Four such plants commonly used by the people of the region were screened for potential antibacterial activity. Antibacterial activity of methanol extracts of the plants parts were used for screening. The plants screened were Psidium guajava, Sanseiveria roxburghiana Adhatoda vasica, Terminalia arjuna. Antibacterial activity was tested against five strains of both Gram positive and Gram negative bacteria. The susceptibility of the microorganisms to the extracts of these plants was compared with selected antibiotic. The result showed that, the methanol extracts of selected medicinal plants exhibited activity against the tested organisms. The obtained results support for the uses of this plant as traditional medicine.
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