Figure 3: 3D architecture of the RNAi microsponge.
(a) Complete 3D structure of a microsponge is shown. The sample boundary is displayed transparently (grey) to visualize the internal dense region (red). Projection densities along xz-plane and yz-plane are superposed. (b–e) Sectioned images (xy-planes) clearly distribute the high-density regions inside. The density decreases near the surface and shows extended diffuse layers over 4~5 image pixels, 130~160 nm, inferring the lamella layers (arrows). The position of each sectioned layer is noted in (a) in rectangle (orange); front (b) to back (e) sequence. The direction of incident X-ray is parallel to the z axis at 0°, and the sample rotation is along the x axis. Scale bar, 500 nm. The color map on the right shows absolute scale in electrons per Å3.
