Yordanova, A., Kyurkchiev, D., Ivanova, M., Tumangelova-Yuzeir, K., Belemezova, K. and Ivanova-Todorova, E. (2022) “Secreted Factors from Umbilical Cord-Mesenchymal Stem Cells Affect CD86 Expression on B Lymphocytes and Increase CCL5 Chemokine Secretion by Healthy Donors’ PBMC”, Proceedings of the Bulgarian Academy of Sciences. Sofia, Bulgaria, 75(11), pp. 1687–1695. doi: 10.7546/CRABS.2022.11.17.