Fig. 9. Solubility profiles of MCT® vaccines in MIF over a period of 168 h at 37 °C, pH 7.4 ± 0.05. Panel (A) shows the solubility of MCT® in MIF base (purple lines) while panels (B) and (C) highlight its solubility in MIF phosphate and MIF citrate respectively (blue and green lines respectively). Panel (D) compares the initial rate of solubilisation of MCT® in the various formulations of MIF using a linear regression analysis. Error bars are representative of ±SD of the measurement where n = 5. Data were analysed for statistical significance using a Friedman test followed by Dunn post hoc tests.