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.
Image of progesterone receptor (PR) immuno-reactivity in human endometrium after administration of a selective PR modulator (SPRM). Note intense positive (brown) immunostaining in the glandular epithelium (g) and virtual absence of immuno-reactivity in the stroma (s). Image kindly provided by Professor Alistair Williams, University of Edinburgh. Full color available online.
