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SEM Analysis of: (a) MEHA-A, (b) MEHA-A/CaP25, (c) MEHA-A/CaP50, (d) MEHA-B, (e) MEHA-B/CaP25, (f) MEHA-B/CaP50, (g) MAHA-A, (h) MAHA-A/CaP25, (i) MAHA-A/CaP50, (l) MAHA-B, (m) MAHA-B/CaP25, (n) MAHA-B/CaP50. Scale bars: (a, d, g, l) 500 µm; all the others 10 µm
