FLT3 is a general dendritic cell marker expressed across DC progenitors and mature DC subsets. XCR1, CLEC9A (DNGR-1), CADM1, and DPP4 show enriched expression in cDC1s specifically, with XCR1 and CLEC9A being well-characterized surface markers of this subset involved in cross-presentation of antigens. Together these markers identify cDC1s and distinguish them from cDC2 and other dendritic cell subsets.