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.
Immunohistochemistry of bromodeoxyuridine-labeled mammary epithelial cells. The brown nuclei (arrows) represent the uptake of bromodeoxyuridine into cells undergoing DNA synthesis. (a) Untreated; (b) treated with estrogen plus progesterone.
