An mAb, NLDC-145, is described that specifically reacts with a group of nonlymphoid dendritic cells including Langerhans cells (LC), veiled cells (VC), and interdigitating cells (IDC). The antibody does not react with precursor cells in bone marrow and blood. Macrophages are not stained by the antibody, but a subpopulation of Ia+ peritoneal exudate cells is recognized. Possible relationships of the various nonlymphoid dendritic cell (NLDC) types are discussed.
A new monoclonal antibody, MIDC-8, is described which shows a comparable tissue distribution as the recently described NLDC-145 antibody. It recognizes interdigitating cells, veiled cells and Langerhans cells in lymphoid organs and the skin of the mouse. In contrast to NLDC-145 it recognizes a cytoplasmic component of these cell types. Its distribution is more restricted to the T cell-dependent areas than NLDC-145. Isolation of dendritic cells from lymph nodes, spleen and thymus revealed that both antibodies react with the in vitro isolated dendritic cells. The results show that these antibodies can be used to study dendritic cells in vitro and emphasize the relationship between the in vivo interdigitating cells of the T cell areas and the in vitro isolated dendritic cells.
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