However, the LF subtype had significantly lower proportions of CD4 + memory T cells, CD4 + naive T cells, CD4 + T cells, CD8 + T cells, CD8 + Tem, macrophages, macrophages M1, mast cells, monocytes, neutrophils, NK cells, Tgd cells, and Th1 cells compared to the HF subtype. Here, CD4 is linked to hydrops fetalis.