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.
A) Mesenteric lymph node of Yorkshire Terrier shows diffuse granulomatous lymphadenitis with extensive infiltration of macrophages, foci of pyogranulomatous inflammation (arrowhead), and focal necrosis (asterisk). Hematoxylin and eosin stain; scale bar represents 100 μm. B) Retropharyngeal lymph node of schnauzer shows innumerable acid-fast bacilli (arrows) within the cytoplasm of macrophages. Ziehl-Neelsen stain; scale bar represents 25 μm.
