Fig. 1
From: Multifunctional silica nanocomposites prime tumoricidal immunity for efficient cancer immunotherapy
Preparation and characterization of DMSN-PEI. A Schematic illustration of the fabrication of DMSN-PEI. B–E TEM images of B DMSN, C DMSN-NH2, D DMSN-s-s-COOH, and E DMSN-PEI. Bar = 100 nm. F–I Particle size distribution of F DMSN, G DMSN-NH2, H DMSN-s-s-COOH, and I DMSN-PEI determined by DLS. Cytotoxic effect of DMSN and DMSN-PEI against J RAW264.7 cells and K TC-1 cells for 48 h at different concentrations. Hemolysis assay of DMSNs and DMSN-PEI: L digital images and M hemolysis percentages. PBS and ddH2O treatment were used as negative and positive control, respectively