Pakpahan EL. TOXICITY TEST OF ROSELLE NANOHYDROXYAPATITE-GELATIN ON OSTEOBLASTS CELLS USING MTT ASSAY. MIRSHuS [Internet]. 2025Nov.13 [cited 2026Jan.17];5(2):302-9. Available from: https://mail.mirshus.moestopo.ac.id/index.php/mirshus/article/view/118