猪只 2 型猪圆环病毒全身性疾病显微图像
Photomicrograph of a lymph node from a pig with porcine circovirus 2 systemic disease (PCV2-SD). Note the lack of evident lymphoid follicles due to severe lymphocyte depletion, together with granulomatous inflammation. H&E stain; scale bar = 300 mcm.
Courtesy of Dr. Joaquim Segalés.
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