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(A) Encapsulation efficiency (%) of calcein in unmodified soyPC vesicles (grey bars) and PC-C32(1,32C9)-PC/soyPC vesicles (1/4, n/n; green bars) prior freeze-drying using PBS including lysine (left-hand side) or trehalose (right-hand side). (B) Calcein retention (%) after freeze-drying and re-hydration of soyPC vesicles (grey bars) and PC-C32(1,32C9)-PC/soyPC vesicles (green bars) using lysine (left-hand side) or trehalose (right-hand side) as cryoprotectant.
