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. 2023 Jan;87(1):41–50.

Figure 4.

Figure 4

Lymph node histopathology. A − Moderate granulomatous inflammation characterized by infiltration with reactive histiocytes (arrow) from pigs inoculated with porcine circovirus type 2a (PCV-2a) and porcine reproductive and respiratory syndrome virus (PRRSV). B − Moderate granulomatous inflammation characterized by infiltration with reactive histiocytes (arrow) from pigs inoculated with PCV-2b and PRRSV. C − Severe granulomatous inflammation characterized by infiltration with reactive histiocytes and multinucleated giant cells (arrows) from pigs inoculated with PCV-2d and PRRSV. D − Mild granulomatous inflammation characterized by infiltration with reactive histiocytes from pigs inoculated with PCV-2e and PRRSV. Hematoxylin and eosin. ×200.