A novel direct co-culture assay analyzed by multicolor flow cytometry reveals context- and cell type-specific immunomodulatory effects of equine mesenchymal stromal cells. - Hillmann, Aline; Paebst, Felicitas; Brehm, Walter; Piehler, Daniel; Schubert, Susanna; Tárnok, Attila; Burk, Janina (PLoS ONE, 2019)