Keywords: Horse; Dendritic cell subset; Plasmacytoid dendritic cellODN, oligodeoxynucleotides; DC, dendritic cells; cDC, conventional DC; FMO, fluorescence minus one; Flt3, fms-like tyrosine kinase 3; Flt3L, Flt3 ligand; IFN, interferon; MoDC, monocyte-derived DC;