鸡星状病毒，十二指肠，雏鸡

Cross-section of the duodenal loop from a 5-day-old chick with runting and stunting syndrome. Chicken astrovirus was detected in the duodenum by in situ hybridization using a digoxigenin-labeled chicken astrovirus riboprobe (A, B, and C). Specific staining within the cystic crypts of Lieberkuhn was also observed (B, C).