Correction to: J Nanobiotechnol (2021) 19:87 https://doi.org/10.1186/s12951-021-00837-0

Following publication of the original article [1], the authors identified an error in Fig. 10.

The original version of figure (Fig. 10) is provided in this correction.

Fig. 10
figure 10

Biosafety assay of MG@P NPs. a The blood glucose of mice after intravenously injecting MG@P NPs (0, 0.25, 0.5, 1, 2, 3, 4, 5, 6 and 8 h). b Hematological and blood biochemical test of mice after intravenous injection of MG@P NPs (n = 5). c Images of H&E staining slices of major organs. The scale bar is 150 μm

The original article has been revised.