<prompt> Langerhans cells in skin fall under which categorySensory neuronsPigment producing cellsAntigen presenting cellKeratin synthesising cell  <response>: Langerhans Cell LC Bone marrow-derived dendritic cell with monocyte-macrophage lineage found in stratum spinosum; constitutes 3-5 of cells of epidermis; contains actin and vimentin Critical in recognizing and presenting foreign antigens to specific T lymphocytes . Connected to keratinocytes E-cadherin receptors . On EM, Langerhans cell with folded nucleus and distinct intracytoplasmic organelles Birbeck granules: striated appearance with either rod-shape andor tennis-racquet-shape. Exposure to UV radiation causes depletion of LCs and decreases ability to present antigen. Ref:- Dermatology by sima Jain; pg num:- 9 