| Extravillous cytotrophoblasts |
| Nucleated erythroblasts |
| Platelets |
| Mesenchymal stem cells |
| CD34+ hematopoietic stem/progenitor cells |
| CD34+ and CD38+ lymphoid progenitors |
| CD19+ and IgM+ B lymphocyte precursor cells |
| CD8+ T cells |
| CD4+, CD25high and FOXP3+ regulatory
T-cells |
| CD45+ leukocytes |
| CD3+ and CD14+ mononuclear cells |
| CD56+ and CD16+ natural killer cells |
Maternal cells [263] and soluble maternal HLA are also transferred in breast milk
[283]