Langerhans cells in skin are -: (A) Antigen presenting cells, (B) Pigment producing cells, (C) Keratin synthesizing cells, (D) Sensory neurons
Answer is A. Professional antigen-presenting cells, including macrophages, B cells, Langerhans cells and dendritic cells, present foreign antigens to helper T cells, while other cell types can present antigens originating inside the cell to cytotoxic T cells. Reff: Ananthanarayanan & Panikers textbook of microbiology 9th edition pg: 138