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Digital photographs showing the swelling process of the cages in PBS over time and their expansion kinetics. Cages were fabricated with OPF2k with (a) 10-mm and (b) 15-mm-diameter mold; (c) absolute length, (d) length ratio, (e) absolute diameter, (f) diameter ratio, (g) absolute mass, (h) mass ratio, (i) absolute volume, and (j) volume ratio. Color images available online at www.liebertpub.com/tea
