1. 
   Yaba tumour
   <oncology, virology> A poxvirus-induced neoplasm of African monkeys caused by the Yaba monkey virus, a member of the family Poxviridae. ... It is associated with tumour-like growths occur chiefly on the head and limbs. The tumours are benign and the natural disease has been reported only in Af...
   Found op http://www.mondofacto.com/facts/dictionary?Yaba+tumour
   
   

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