Figure 6From: Isolation and analysis of a very virulent Marek’s disease virus strain in ChinaPathological changes of chickens died at 90-day-old. a) diffused nodule in the thicken mesentery; (b) ulcer in duodenal mucosa; (c) tumor in liver; (d) tumor in heart; (e) muscular stomach swelling with thicken corneum layer, and easy to be peeled.Back to article page