Sari, Finsa, Tandelilin, Regina, Rahman, Friska, Mardhiyah, Iffah, AND Widita, Elastria. " The Effect of Porphyromonas gingivalis Lipopolysaccharide-Induced Periodontitis in Rats Fed a High-Cholesterol Diet on Macrophage Number" Journal of Indonesian Dental Association [Online], Volume 4 Number 2 (31 October 2021)