Which of the following enables almost all cells of the body to be recognized by an individual's immune system as "self?"

Question

Quizplus · Accepted Answer

Class I MHC molecules on cell surfaces allow immune cells to recognize "self" cells by presenting peptides derived from normal cellular proteins. This is important for detecting virus-infected or cancerous cells that may have abnormal proteins on their surface. Class II MHC molecules present antigens from foreign pathogens to immune cells, which is important for initiating an immune response against these invaders. Ig D molecules are not involved in self-recognition, and ABO antigenic markers are important for blood type determination but not for general cell recognition by the immune system.

Which of the Following Enables Almost All Cells of the Body