Isolation and Toxicity Test of Chitosan from Green Mussels (Perna viridis L.) With Brine Shrimp Lethality Test (BSLT) Method: Study Program of Pharmacy, Faculty of Pharmacy, Universitas Muslim Nusantara Al Washliyah, Medan, Indonesia. J. Sains. Kes. 2024;5(5):759-765. doi:10.30872/jsk.v5i5.588