Fig. 4
From: Effect of silica-coated magnetic nanoparticles on rigidity sensing of human embryonic kidney cells
Staining of actin filaments on HEK293 cells on soft (5 kPa) and rigid (2 MPa) surfaces after treatment with different concentrations (0–1 μg/μL) of MNPs@SiO2(RITC) for 12 h. For actin labeling, cells were incubated with Alexa Fluor 488-conjugated phalloidin (Molecular Probe, Eugene, OR, USA), (1:200) diluted in PBS, for 1 h at room temperature