beta 2 microglobulin (B2M)JAMA
Protein tightly bound to the surface
of many nucleated cells, particularly those of the immune system. Elevated
B2M levels occur in a variety of diseases. While elevated B2M is not specific to HIV, there is a correlation between this marker and the progression of HIV disease. See Immune System.
Beta-2 Microglobulin (B2M):SFAF
a cell surface protein that is released
into the bloodstream when cells die. Elevated blood levels of B2M are
associated with immune activation and HIV replication. Levels below 3
mg/liter are considered normal; levels above 5 mg/liter indicate a high
risk of HIV disease progression.
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