Markers, receptors, mediators, pathways

High-affinity IgE receptor that couples sensitization to mast cell and basophil activation

Stem cell factor receptor supporting mast cell development, survival, and tissue residency

Rapid mast cell and basophil mediator for vascular leak, itch, mucus, and smooth muscle effects

Neutrophil chemokine receptor that follows CXCL8-like recruitment gradients

Checkpoint receptor marking adapted T cell restraint during chronic antigen exposure

Hypoxia and inflammatory metabolism transcription factor linking oxygen tension to immune state

Microbial metabolites that support tolerance, barrier health, and regulatory immune tone

Central inflammatory transcription pathway downstream of TNF, IL-1, TLRs, and danger signals

High-leverage type 2 antibody that arms mast cells and basophils at barrier tissues

Systemic memory antibody family for opsonization, neutralization, complement, Fc receptor signaling, and placental transfer

Chronic-exposure and tolerance-associated IgG subclass that should not be treated as a simple food allergy marker

Mucosal antibody system for immune exclusion, microbiome containment, and barrier tolerance

Early pentameric antibody for first-line neutralization, natural antibody tone, and complement initiation

Sugar structures on antibody Fc regions that tune receptor binding, complement behavior, inflammation, aging, and resolution

Neonatal Fc receptor that recycles IgG and albumin and supports long antibody half-life

Antibody-triggered complement entry point connecting immune complexes to opsonization and inflammation

Drug timing, mechanism, masking effects, hypersensitivity, immunosuppression, and pathway redirection

Smoke, VOCs, solvents, pesticides, metals, irritants, and occupational exposures as immune threshold context