Confocal microscopy images of core-shell microgels MS1 in J774A.1 cells co-stained with nucleic staining Hoechst 33342 (a–c) and LysoTracker Red® (d–f).

<p>(a) Hoechst 33342 blue fluorescence inside cells. (b) and (e) Green fluorescence of core-shell microgels inside cells. (d) LysoTracker Red® red fluorescence inside cells. (c) Overlay images of (a) and (b). (f) Overlay images of (d) and (e). Hoechst 33342 was excited at 402 nm and its blue emission was collected using a 450/35 nm filter set; green fluorescence was excited at 440 nm and emissions were collected using a 515/30 nm filter set; LysoTracker Red® fluorescence was excited at 561 nm and its red emission was collected using a 605/75 nm filter set. Scale bars represent 20 µm.