Putri C, Zulfarina, Darmawati. ANTIBACTERIAL ACTIVITY TEST OF THE COMBINATION OF MANGOSTEEN (Garcinia mangostana L.) PERICARP EXTRACT AND CIPLUKAN (Physalis angulata L.) LEAF EXTRACT AGAINST Propionibacterium acnes AS A POSTER DESIGN FOR BIOLOGICAL TECHNOLOGY INNOVATION MATERIALS FOR GRADE X SMA. Algebra. 2026;6(2):338-347. doi:10.58432/sybgy165