Table 2 Experiments using side-by-side diffusion cells
♯ | Formulation on the donor side | Solution on the other side | Change in the formulation applied | n |
|---|---|---|---|---|
I | Humulin®R | Otsuka normal saline | m-Cresol concentration pH | 6 |
II | Humulin®R | PBS (pH 7.4) | m-Cresol concentration | 5 |
III | Humulin®R | Otsuka normal saline + m-cresol (2.5 mg/mL) | pH | 6 |
IV | Humulin®R | PBS (pH 5.5) | pH, can induce isoelectric precipitation m-Cresol concentration | 3 |
V | Humulin®R | PBS (pH 6.5) | pH, cannot induce isoelectric precipitation m-Cresol concentration | 5 |