Alginate: Current Use and Future Perspectives in Pharmaceutical and Biomedical Applications

Figure 4

SEM images of alginate microspheres obtained by the spray drying method with metronidazole under magnification ×20 000 (a), ranitidine hydrochloride under magnification ×10 000 (b), and metformin hydrochloride under magnification ×20 000 (c) (author’s unpublished images).

(a)

(b)

(c)