Enwere ike iji urea n'ọtụtụ buru ibu dị ka akụrụngwa maka mmepụta nke melamine, urea formaldehyde resin, hydrazine hydrate, tetracycline, Phenobarbital, caffeine, belata agba aja aja BR, phthalocyanine B, phthalocyanine Bx, monosodium glutamate na ngwaahịa ndị ọzọ. Ọ nwere mmetụta na-egbuke egbuke na c ...
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