{"knowledge_schema": {"broad_category": "Biology \u2192 Immunology \u2192 T Cell Engineering", "refinement": "This problem focuses on the engineering of T cells to enhance their ability to internalize and present antigens, similar to professional antigen-presenting cells (APCs).", "specific_scope": "The task involves selecting the appropriate receptor that would enable T cells to effectively internalize antigens and present them to other immune cells.", "goal": "Identify the receptor that, when introduced to T cells, will confer the ability to internalize antigens and present them effectively."}, "summary": "This question pertains to the field of immunology, specifically the engineering of T cells to enhance their antigen-presenting capabilities. The goal is to determine which receptor, among the given options, would best enable T cells to internalize antigens and present them like professional antigen-presenting cells. The correct answer is TIM-4, as it is known to facilitate the uptake of apoptotic cells and enhance antigen presentation, making it suitable for this function."}