Pathology Which of the following is the most impoant antigen-presenting cell (APC) for initiating T-cell response against protein antigens? A NK cell B Dendritic cell C Macrophage D B-lymphocyte 💡 Explanation Which of the following is the most impoant antigen-presenting cell (APC) for initiating T-cell response against protein antigens? ✓ Correct Answer: B. Dendritic cell