Final answer:
Erythrocytes, or red blood cells, do not express MHC class I molecules on their surface.
Step-by-step explanation:
MHC class I molecules are found on the surfaces of all nucleated cells, except for red blood cells and platelets which are non-nucleated. They play a crucial role in presenting fragments of proteins from infectious agents within the cell to T-cells. This helps the immune system recognize and respond to 'non-self' or foreign proteins.
The cell type that does not or expresses very little MHC class I molecules is the erythrocyte, also known as a red blood cell. Erythrocytes lack a nucleus and therefore do not express MHC class I molecules.