Fig.3

Changes of hemoglobin and Mg2+ concentration. a The hemoglobin concentration in the MgSO4 group and the NaCl group increased gradually with time. b The concentration of Mg2+ in the MgSO4 group decreased with time
Changes of hemoglobin and Mg2+ concentration. a The hemoglobin concentration in the MgSO4 group and the NaCl group increased gradually with time. b The concentration of Mg2+ in the MgSO4 group decreased with time