CD4 and abortion: CD4+Foxp3+ Treg cell numbers in spleen (median: 10.88 vs. 10.43), para-aortic lymph nodes (median: 8.96 vs. 11.15), and blood (median: 5.01 vs. 4.83) did not differ statistically between abortion-prone females that received mature BMDCs or hCG-treated BMDCs, respectively.