reference
IgG
Systemic memory antibody family for opsonization, neutralization, complement, Fc receptor signaling, and placental transfer
immunoglobulinmemoryopsonizationFc receptor
Review layer
Last reviewed 2026-05-17
conceptualeducational
Systems teaching draft. Content is structured for education and graph expansion, with formal source tagging ready for the next review pass.
antibody
Systems Context
IgG is not one behavior; subclass, antigen specificity, Fc receptor context, and Fc glycan state decide the immune-state effect.
Clinical Use
Total IgG, subclasses, and vaccine responses should be interpreted together in recurrent infection or immune deficiency workups.
Aliases
Expressed By
Memory B cellsLong-lived plasma cells