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.
pH-responsive fluorescence emission of LDH-ZnPcS8 at the cellular level: (A) Confocal fluorescence images of HepG2 cells after incubation with LDH-ZnPcS8 and ZnPcS8 at 0.1 μM for 30 min, followed with 25 μM nigericin solutions at pH 7.4, 6.5 and 6.0 for 20 min. Scale bars= 50 μm. (B) Comparison of the relative intracellular fluorescence intensities. Data are expressed as mean values ± standard deviation (number of cells = 50).
