Those cells are a subclass of antigen-presenting cells also known as dendritic cells.
Diabetes insipidus has occasionally been confused with a "Histiocytosis" of cells named after this man.  Those cells are a subclass of antigen-presenting cells also known as dendritic cells. A better known structure named after this man produces such hormones as ghrelin in its epsilon cells and somatostatin in its delta cells, while the better-known alpha and beta cells produce glucagon and insulin. For 10 points, name this German anatomist whose namesake "islets" are found in the pancreas.
Diabetes insipidus has occasionally been confused with a "Histiocytosis" of cells named after this man.  
Paul {Langerhans}