Comparative bioactivities of native, degraded, and sulfated fucoidan derivatives from Sargassum crassifolium: insights from apoptosis, migration, immunostimulation, and multivariate analysis: Comparative bioactivities of fucoidan derivatives from Sargassum. (2026). Indian Journal of Experimental Biology (IJEB), 64(06), 500-518. https://doi.org/10.56042/ijeb.v64i06.24625