Paratuberculosis, acid-fast stain of ileocecal lymph node, Holstein cow
Acid-fast stain of an ileocecal lymph node from a Holstein cow with paratuberculosis. Blue cells are mononuclear inflammatory response (macrophages and lymphocytes), and red-stained bacteria are Mycobacterium avium paratuberculosis. Original magnification 100X.
Courtesy of Dr. Michael Collins.
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