CEACAM8 and hydrops fetalis: Conversely, 7 immunophenotypes exhibited a reduced risk of HF, including Activated Treg AC; Im myeloid-derived suppressor cell %CD33dim human leukocyte antigen DR− (HLA DR−) CD66b−; CD33dim HLA DR+ CD11b+ %CD33dim HLA DR+; CD20 on IgD− CD38dim; side scatter-A (SSC-A) on CD14+ monocyte; SSC-A on HLA DR+ natural killer cell; CD11b on CD14+ monocyte.