Priyanka Ray, Sumana Chatterjee and Prerona Saha 2022. Immunomodulatory Activity of Natural Polysaccharides in Combating Covid -19, Cancer, Inflammatory Disorders: A Review: Pharmaceutical Science-Pharmaceutical analysis for Novel drug formulation. International Journal of Life Science and Pharma Research. 10, 5 (Jun. 2022), 191–206. DOI:https://doi.org/10.22376/ijpbs/lpr.2020.10.5.P191-206.