TCR - receptor on CD8+T cells - recognizes fragments of peptide bound in a. CD3 molecule b. CD4 molecule C. MHCl molecule d. MHCll molecule

The correct answer is d. MHCll molecule.<br /><br />TCR (T cell receptor) on CD8+ T cells recognizes fragments of peptide bound in the MHC class I (MHC I) molecule. MHC class I molecules present peptide fragments derived from intracellular proteins to CD8+ T cells, which then initiate an immune response against infected or abnormal cells.