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.
Intracellular pH levels of individual cells determined by chitosan-modified nanopipettes. pH levels recorded for (A) human fibroblast, (B) HeLa, (C) MCF-7 and (D) MDA-MB-231 cells. Horizontal lines represent the average intracellular pH measured with the nano-pH probe.
