Membrane glycoproteins and glycolipids that enable cells to recognize potentially dangerous foreign cells serve as cell identity markers.
- Cell surface antigens and cell markers act as monograms to help distinguish and categorize cells. Most of these are chemicals or antigens found in the plasma membrane of cells.
- There are distinct sets of markers or antigens that are particular to various cell types.
- In essence, cell surface markers are like a fingerprint—they are unique to each type of cell and can be recognized based on the types of markers that are found on the membrane.
- Currently, CD antigen, often referred to as CD molecules and clusters of differentiation, is the most prevalent cell surface marker.
- Glycoproteins carry out essential structural and metabolic tasks. Cell-cell recognition is the ability for cells to identify if another cell is familiar or foreign.
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