MBL2 and lumbar disc herniation: As a result, this study discovered that complement C3, complement C4a, DNA protein (human complement factor H high similarity protein), and mannose-binding protein C were significantly different before and after combined traditional and western medicine and nonoperative treatment of lumbar disc herniation and that complement C4a, complement factor H, and mannose-binding protein C all played a role in inflammation, immune regulation, and other diseases.