The results showed significant differences in the scores of various immune cells between preeclampsia placenta and normal placenta, including Activated.CD4.T.cell, Activated.CD8.T.cell, D56dim.Natural.killer.cell, Immortal.Dendritic.Cell, Macrophage, Natural.Killer.Cell, Regulatory.T.cell, Type.1.T.helper.cell, Type.2.T.helper.cell, and Memory.B.cell (Figure 7A). This evidence concerns the gene CD4 and preeclampsia.