Authors: Cerutti A, Chen K, Chorny A PMID: 21219173 PMCID: PMC3064559 DOI: 10.1146/annurev-immunol-031210-101317 Abstract Mucosal surfaces are colonized by large communities of commensal bacteria and represent the primary site of entry for pathogenic agents. To prevent microbial intrusion, mucosal B cells release large amounts of immunoglobulin (Ig) molecules through multiple follicular and extrafollicular pathways. IgA [...]