The absence of inactivation at two autosomal loci.
D002262:Carboxy-Lyases; D002675:Child, Preschool; D002875:Chromosomes; D046508:Culture Techniques; D006801:Humans; D005779:Immunodiffusion; D007122:Immunoelectrophoresis; D008375:Maple Syrup Urine Disease / Q000235:genetics; D010733:Phosphoglucomutase
D002262:Carboxy-Lyases; D010733:Phosphoglucomutase