Simbolon, Juli Estika, Sri Isdadiyanto, and Agung Janika Sitasiwi. 2022. “The Effect of Nanochitosan Preparation of Neem Leaf (Azadirachta Indica) Ethanol Extract on the Liver Structure of White Rats (Rattus Norvegicus)”. International Journal of Health, Education & Social (IJHES) 5 (6), 21-31. https://doi.org/10.1234/ijhes.v5i6.237.