Erratum to: J Nanobiotechnol DOI 10.1186/s12951-015-0068-6

Panel A, B, and C from Figure 7 (Fig. 1 here) of this work [1] was generated using HepG2, SMMC7721, and NIH 3T3 cells, respectively. After publication of this work, we noted that they were inadvertently labelled as NIH 3T3, HepG2 and SMMC7721 cells. The figure caption of Figure 7 has now been corrected in this erratum.

Figure 1
figure 1

Flow cytometry study. ASGPR-positive cells HepG2 (A) and SMMC7721 (B), and ASGPR-negative cells NIH 3T3 (C) incubated with blank medium (control), Lac-MSNs, MSNs, and excess free lactose with Lac-MSNs for 4 h at 37°C. Data represent mean ± SD (n = 3).