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Comparative in vitro analysis of the biological potential of Usnea florida (L.) Weber ex F.H. Wigg., Usnea intermedia (A. Massal.) Jatta, and Usnea lapponica vain and quantification of usnic acid. IJTK [Internet]. 2024 Jun. 20 [cited 2026 May 13];23(6):530-8. Available from: https://or.niscpr.res.in/index.php/IJTK/article/view/3586