Figure 1

(a) Micrograph of the film texture obtained from a solution of 0.5 mg/ml BSA + 20 mM NaCl, (b) micrograph of the film texture obtained from a solution of 0.5 mg/ml BSA + 20 mM NaCl + 0.2 mM AlCl3, (c) micrograph of the film texture obtained from a solution of 0.5 mg/ml BSA + 20 mM NaCl + 0.2 mM FeCl3. The micrographs are fully in focus.