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.
Extracellular CySS is consumed more rapidly by fibroblasts from young mice than by fibroblasts from old mice. DMEM containing 45 μM CySS (a) or 100 μM Cys (b) was added to lung fibroblasts from young and old mice. Media were removed at different time points for analysis of Cys and CySS concentrations by HPLC. Concentrations were transformed as the natural logarithm. The line through the data represents the best fit via linear regression.
