Fig. 1

Characterization of CsA@HFn. A The particle size distribution of HFn and CsA@HFn. B The TEM image of HFn and CsA@HFn. C The stability of CsA@HFn in distilled water, PBS, 10% FBS solution and DMEM solution. D The cumulative CsA release from CsA@HFn in PBS at different pH value and PBS containing NaClO (pH7.4) solution. (n = 3, \(\stackrel{-}{x}\) ± SD)