Question

multiple choice question
where are type i mhc proteins found?

on all nucleated body cells
only on dendritic cells and macrophages
only on dendritic cells
only on erythrocytes

Explanation:

To determine where type I MHC proteins are found, we recall immunology concepts: Type I MHC (Major Histocompatibility Complex) molecules are expressed on the surface of all nucleated cells in the body. Dendritic cells and macrophages (and other antigen - presenting cells) also express Type II MHC, but Type I is more widespread on nucleated cells. Erythrocytes (red blood cells) are anucleated, so they don't have Type I MHC. So the correct option is the one stating they are on all nucleated body cells.

Answer:

A. On all nucleated body cells (assuming the first option is labeled A; if the original options had different labels, adjust accordingly with the correct identifier and text)