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.
Lymph node from a pig in stage III. There are a large number of macrophages infiltrating a peritrabecular area (arrow). Immunolabelling with anti-lysozyme in formalin-fixed, paraffin-embedded tissue, using the ABC method and Mayer’s haematoxylin counterstain (original magnification 10×).
