age-associated B cell
age-associated b cell
A transcriptionally distinct memory B cell whose presence increases with age, during infections, and in autoimmune diseases. In humans and mice, this cell type can be identified by the expression of T-bet, CD11c, CD11b, and the lack of CD21. An age-associated B cell responds to TLR stimuli, may produce autoantibodies, and participates in antiviral responses and pathogen clearance.