“Phytochemical Analysis and Antibacterial Activity of Purple Leaf Extract [Graptophyllum Pictum (L.) Griff] Against Streptococcus Mutans”. Acta Medica Philippina 55, no. 8 (November 24, 2021). Accessed March 16, 2026. https://actamedicaphilippina.upm.edu.ph/index.php/acta/article/view/2125.