N,N-dimethylglycine(in) <=> N,N-dimethylglycine(out)
n,n-dimethylglycine(in) <=> n,n-dimethylglycine(out)
N,N-dimethylglycine(in) <=> N,N-dimethylglycine(out)
n,n-dimethylglycine(in) <=> n,n-dimethylglycine(out)