Immune Tolerance priority journal 32 Humans 30 human 28 Female 26 Animals 22 nonhuman 22 Pregnancy 20 immunological tolerance 18 protein expression 18 Mice 16 article 16 controlled study 16 interleukin 10 16 Embryo Implantation 14 T-Lymphocytes, Regulatory 12 Trophoblasts 12 Vasoactive Intestinal Peptide 12 dendritic cell 12 female 12 galectin 1 12 immunoregulation 12 regulatory T lymphocyte 12 review 12 vasoactive intestinal polypeptide 12 Dendritic Cells 10 Galectin 1 10 cytokine release 10 glycan 10 human cell 10