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. 2023 Oct 8;28(19):6980. doi: 10.3390/molecules28196980

Figure 11.

Figure 11

Raman chemical mapping of the freeze-dried optimized sodium alginate bead formulation. Plot (A): distribution of pioglitazone hydrochloride; plot (B): distribution of metformin hydrochloride; plot (C): distribution of sodium alginate.