The authors regret that the original version of Fig. 3 incorrect. The updated figure is below for reference.
Fig. 3 Super-resolution microscopy image of methotrexate loaded PLGA nanoparticles (green) (92 μg/mL, 3 h) in THP-1 derived macrophages. Cells were fixed and stained for cytoskeleton (Alexafluor 647, magenta) and nucleus (Hoechst nucleus, blue). Scale bar = 20 μm. (For interpretation of the references to colour in this figure legend, the reader is referred to the web version of this article.)
The authors would like to apologise for any inconvenience caused.