Erratum to: J Nanopart Res (2014) 16:2771 DOI 10.1007/s11051-014-2771-x

In the original publication, Fig. 2 was published incorrectly. The revised Fig. 2 is given below.

Fig. 2
figure 2

Aggregation characteristics of gold nanoparticles in physiological condition a 30 nm samples, b 60 nm samples