Comparative Study of the Immune Response Induced by an Argentinian Classical Strain of IBDV in Two Chicken Breeds

Figure 2

Representative photos of bursal lesions. The arrow indicates the presence of lymphocytes in the cortex, () points the absence of lymphocytes in the cortex and (+) shows the inflammatory infiltrate. (a and b) Photographs of a healthy bursa. (c and d) A bursa with the highest score in the measured parameters.

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