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.
Copper-dependent responses of PCTR4 and PCRP1. Strains PCTR4lacZ, PCRP1lacZ, and PLESSlacZ were grown for 5 days in RPMI 1640 broth supplemented with 0, 10, or 100 μM CuSO4. The mean β-galactosidase activity is shown in units (U) on the y axis. Error bars indicate standard deviations for three clones.
