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. 2016 Jan 5;6:18877. doi: 10.1038/srep18877

Figure 2. The load (A) or release profiles (C) of gentamicin on GPA NPs in 6 mM HEPES buffer (pH 7.4) and 6 mM Tris-HCl buffer (pH 4.5).

Figure 2

The effect of ionic strength on the load (B) or release (D) of gentamicin on GPA NPs. NaCl was added to 6 mM HEPES buffer (pH 7.4) and 6 mM Tris-HCl buffer (pH 4.5) to obtain the ionic strengths as indicated.