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.
Shows graphically the principle of gene expression profiling using cDNA microarrays. The activity of up to 20000 genes could be simultaneous evaluated. Usually two tissues or cell populations are compared and the final result shows the different genetic activity of the sample of interest compared to a reference control.
