Compared with C group, ultrastructural pathology of PD mice showed that the mitochondria were diminished numerically and dwindled morphologically, which is reckoned as the major characteristic of ferroptosis, while L. lactis MG1363-pMG36e-GLP-1 treatment restored number and morphology of mitochondria (Figure 4a). The gene discussed is GCG; the disease is Parkinson disease.