MBL2 and systemic lupus erythematosus: The levels of serum MBL in lupus mice induced by ALD-DNA decreased and were negatively correlated with SLE disease, indicating that serum MBL was insufficient in SLE disease, which was consistent with previous reports on the serum MBL levels in SLE patients and MRL-lpr lupus mice [15], [27], [28], [47].