Ozugbo enwere mmụm amino acid decarboxylase na tyrosine hydroxylase, e nwekwuru usoro dopamine site na tyrosine.  Ntuba nke oma n'ime ụbụrụ pụtara na enwere ọganihu na ịmụrụ anya. 
Ozugbo enwere mmum amino acid decarboxylase na tyrosine hydroxylase, e nwekwuru usoro dopamine site na tyrosine.  Ntuba nke oma n'ime uburu putara na enwere oganihu na imuru anya. 