53 bytes added ,  21:11, 20 April 2011
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[[Avian Leukosis Virus]]
 
[[Avian Leukosis Virus]]
   −
[[Avian Circoviruses]]
+
[[Psittacine Beak and Feather Disease ]]
 +
 
 +
[[Chicken Anaemia Virus Disease]]
    
[[Mareks Disease]]
 
[[Mareks Disease]]
Author, Donkey, Bureaucrats, Administrators
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