Editing Dendritic cell (section)

===Research challenges===
The exact genesis and development of the different types and subsets of dendritic cells and their interrelationship is only marginally understood at the moment{{when|date=March 2023}}, as dendritic cells are so rare and difficult to isolate that only in recent years they have become subject of focused research. Distinct surface antigens that characterize dendritic cells have only become known from 2000 on; before that, researchers had to work with a 'cocktail' of several antigens which, used in combination, result in isolation of cells with characteristics unique to DCs.{{citation needed|date=May 2020}}