Fig. 5

Tumor penetration of Au-Pt@ur NPs in orthotopic BCa models (GFP-transfected T24 cells). After 2 h-intravesical instillation, the bladders were frozen and sectioned (20 μm thick) in a cryostat and the sections were imaged by a confocal microscope from DAPI (nuclei), eGFP (Bca cells), and Cy5 (NPs) channels. Scale bar: 100 μm