????? ??? ?? ?? ?? ? ?? ??? ?? ???? , ?? ??? ????? ??? ?? ?? ?? ????? ??? ?? ?? ?? ???? ?? ??? ?? ??? ??? ?? ??? ? ??? ??? ?? ????. Hypermethioninemia can come about with other metabolic disorders, like homocystinuria, tyrosinemia, and galactosemia, which also entail the defective breakdown o