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Atrophic bursa of Fabricius, infectious bursal disease virus, chicken
infectious_bursal_disease_virus_subclinical_strain_chicken_high
Atrophic bursa of Fabricius, infectious bursal disease virus, chicken

    Small, atrophic bursa of Fabricius in a chicken infected with a subclinical strain of infectious bursal disease virus.

Courtesy of Dr. Daral J. Jackwood.