Boontha, Supavadee, Hans E. Unginger, Neti Waranuch, Assadang Polnok, and Tasana Pitaksuteepong. “Chitosan and Trimethyl Chitosan Particles As Oral Vaccine Delivery Systems: Comparison of the Potential to Initiate Immune Responses”. Journal of Metals, Materials and Minerals 21, no. 1 (June 30, 2011). Accessed May 2, 2024. https://jmmm.material.chula.ac.th/index.php/jmmm/article/view/167.