Figure 6From: Biomagnetic of Apatite-Coated Cobalt Ferrite: A Core–Shell Particle for Protein Adsorption and pH-Controlled ReleaseFTIR spectra of pure BSA protein ( left ), and comparison of BSA protein loading onto the apatite (Ap)-coated citric acid–stabilized cobalt ferrite (CFCA) (CFCA-Ap) surface ( right ) at various concentrations: ( a ) 0.2 mg/ml, ( b ) 0.4 mg/ml, ( c ) 0.6 mg/ml, ( d ) 0.8 mg/ml, and ( e ) 1.0 mg/ml.Back to article page