<prompt> Which of the following are efficient antigen-presenting cells found in the epidermis?MacrophagesT cellsLangerhans cellsDendritic cells  <response>: Processing and presentation of antigen in association with class II molecules is critical for activation of T cells. Langerhans cells are potent antigen-presenting cells APCs found in skin. Macrophages are the major APCs in the body. Dendritic cells are APCs found in lymphoid tissue. 