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In vitro stability of GLT. (A) Changing rates of the particle size during 24 h at 37 °C (means ± SD, n = 3). (B) The transmittance of GLT during 24 h at 37 °C (means ± SD, n = 3). (C) particle sizes of GLT and GTT in half a year. (D) Images of GLT and GTT in half a year, compared with GT which aggregated to precipitates.
