Abnormal leukocyte count Abnormal dendritic cell count 2019-07-06T22:25:02Z A deviation from the normal count of dendritic cells in the peripheral blood circulation. Dendritic cells are of hematopoietic origin, typically resident in particular tissues, specialized in the uptake, processing, and transport of antigens to lymph nodes for the purpose of stimulating an immune response via T cell activation. These cells are lineage negative (CD3-negative, CD19-negative, CD34-negative, and CD56-negative). Dendritic cells (DC), the professional antigen-pre-senting cells that prime specific immune responses,comprise a very small percentage of circulating whiteblood cells.