禽偏肺病毒感染，肿头综合征，肉鸡
Broiler with a swollen infraorbital sinus after experimental avian metapneumovirus infection.
Courtesy of Dr. Ye Htut Aung, Clinic for Poultry, University of Veterinary Medicine Hannover.
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Broiler with a swollen infraorbital sinus after experimental avian metapneumovirus infection.
Courtesy of Dr. Ye Htut Aung, Clinic for Poultry, University of Veterinary Medicine Hannover.
