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Stability of the HA- and PEG-coated liposomes at physiological temperatures monitored for 168 h (one week) based on ICG absorbance (A,C) and calcein fluorescence (B,D) in porcine vitreous (A,B) and human plasma (B,D) samples. Liposome solution (25%) was mixed with the biological fluids (75%). The snapshot (E) shows the time-points during the first 12 h of calcein release (* p < 0.05).
