Figure 6
(a) Fused micrograph of two MAXWELL images taken with red or green filters, showing HCT-116 cells loaded with NaGdF4:Eu (red) and NaGdF4:Tb (green) SciNPs. Red and green circles mark those SciNPs emitting only red or green light. The yellow squares mark regions of mixed SciNPs (yellow). Zoomed-in images are shown on the right of (a). (b) Procedure to analyze and identify the color of each voxel of the merged 3D volume, a), with the emission spectra of red and green SciNPs. The voxels of strong green and red emission intensity are colored in yellow. Scale bar: (a) 50 µm; inset) 1 µm.
