Fig. 3

Stability of ATRA-NLC-Gel over 5 months under storage conditions of 4 °C and 25 °C. (A) Changes in the appearance of ATRA-NLC-Gel. Particle size (B) and PDI (C) variations of ATRA-NLC within ATRA-NLC-Gel. (D) Changes in ATRA content within ATRA-NLC-Geln = 3, ns: no significant