MHC proteins are found in all higher vertebrates. In human beings the complex is also called the human leukocyte antigen (HLA) system

How many MHC molecules are present in human?

Thus, with three MHC class I genes and a possible four sets of MHC class II genes on each chromosome 6, a human typically expresses six different MHC class I molecules and eight different MHC class II molecules on his or her cells.

Do all cells have MHC?

MHC I molecules are found on all nucleated cells; they present normal self-antigens as well as abnormal or nonself pathogens to the effector T cells involved in cellular immunity.