Immunology

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2 domain-specific abstractions whose origin domain is Immunology.

• Antigen — A molecular entity or feature defined by specific adaptive-immune receptor recognition, whose capacity to provoke a response depends separately on host and presentation context.
• Immunodiffusion — A family of gel assays in which antigen, antibody, or both diffuse to establish concentration gradients and produce spatially interpretable immune precipitates near zones of equivalence.