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.
Images of Hela cells (top row), MG63 cells (middle row), and folate receptor blocked Hela cells (bottom row) incubated with SNP-DBF-NHFA (20 µM, 2 h). Left column: DIC, 40 ms. Middle column: one-photon fluorescence image, 200 ms (filter cube Ex: 377/50 DM: 409 Em: 525/40). Right column: 3D reconstruction from overlaid two-photon fluorescence images (Ex: 740 nm; Power: 30 mW; Em. short-pass filter 690 nm) 10 µm grid.
