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(a) Morphology and (b) diameter change of TSs in alginate capsules cultured for 3 weeks. (c) Water content of different groups of TSs (n=3, **p < 0.01). (d) Images of histological sections stained for Picrosirius Red/Fast Green demonstrating collagen content at the core and edges of TSs of different groups after the 3-week culture. (e) sGAG content stained by Toluidine Blue in different groups after the 3-week culture.
