Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
(A) optical/fluorescence microscopy image of live HeLa cells coated with halloysite-doped silica shells (nuclei are stained with DAPI); (B, C) dark-field microscopy images of live HeLa cells coated with halloysite-doped silica shells; scanning electron microscopy images of (D) intact HeLa cells, (E) HeLa cells coated with pure silica shells and (F) HeLa cells coated with halloysite-doped silica shells. Red arrows indicate halloysite nanotubes.
