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.
Portal triads in liver at the end of treatment. (A) Normal number and epithelial morphology of bile ducts in female rat treated with vehicle only. (B) Minimally increased number and minimally activated epithelial cells of bile ducts (arrows) in female rat treated with 108 pfu H1PV. Magnification, 40×.
