This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Immunology, Subject name: Microbiology
[{'content': "All of these are antigen presenting cells (APC's) except- \nSelect and explain. \nA. B cells, B. T cells, C. Dendritic cells, D. Langerhans cells", 'role': 'user'}, {'content': 'Answer: B \nExplanation: Antigen-Presenting Cells(APCs): APCs implies to cells that present the antigenic peptide along with MHC class II to TH cells. They may be grouped into: * Professional APCs: e.g. 1.Macrophages, 2.Dendritic cells (Langerhans cells(LC) are members of the dendritic cells family, residing in the basal and suprabasal layers of the epidermis) 3.B-cells * Nonprofessional APCs: e.g. Fibroblasts (skin), Thymic epithelial cells, Pancreatic beta cells, Vascular endothelial cells, Glial cells (brain) and Thyroid epithelial cells.', 'role': 'assistant'}]