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. 2018 Dec 27;4:83. doi: 10.1186/s40981-018-0221-y

Fig. 1.

Fig. 1

Metabolic pathway of methylmalonic acidemia. Methylmalonic acid (MMA) accumulates systemically because of intracellular methylmalonyl-CoA mutase (MCM) or vitamin B12, the coenzyme of MCM