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.
Histogram demonstrating the phototoxicity of lipofuscin. Lipofuscin-fed RPE cells were either maintained in the dark (black bars) or exposed to light (gold bars): A. blue light (400–550 nm); B. amber light (550–800 nm) for up to 48 h. Cell viability was determined using the MTT assay [47]. Vertical bars represent standard error of the mean.
