MBL2 and diabetic retinopathy: MBL is associated with many human diseases: low MBL can identify neonates with inflammatory response syndrome when developing sepsis [38]; MBL can serve as an inflammatory marker in predicting the prognosis of patients with community-acquired pneumonia [39]; elevated MBL can be used as an independent marker for diabetic retinopathy [40]; and low MBL is predictive for coronary artery disease and myocardial infarction [41].