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.
High resolution confocal micrographs of sycamore cells after incubation in a solution containing 1014 CdSe/ZnS quantum dots per ml for two hours (A and B) and for 18 h (C and D). (A and C) are confocal fluorescent images, whereas B and D are corresponding images taken under Nomarski light microscopy.
