Detection of Antibacterial Fraction of Ethanol Extract of Folium Sambung Nyawa (Gynura procumbens) in Salmonella typhi. jisk [Internet]. 2023 Dec. 31 [cited 2024 Nov. 21];4(3):6-11. Available from: https://ejournal.sumateraconnect.or.id/index.php/jisk/article/view/47