Term: antigen: any substance (as a toxin or enzyme) that stimulates an immune response in the body (especially the production of antibodies)
Broader: physical entity: an entity that has physical existence | Unrelated: alabaster: a hard compact kind of calcite
Broader: physical entity: an entity that has physical existence | Unrelated: interface: (chemistry) a surface forming a common boundary between two things (two objects or liquids or chemical phases)
Broader: physical entity: an entity that has physical existence | Unrelated: solitaire: a card game played by one person
Broader: physical entity: an entity that has physical existence | Unrelated: natural resource: resources (actual and potential) supplied by nature
Broader: physical entity: an entity that has physical existence | Unrelated: comity: a state or atmosphere of harmony or mutual civility and respect
Broader: physical entity: an entity that has physical existence | Unrelated: obolus: a Greek unit of weight equal to one tenth of a gram
Broader: physical entity: an entity that has physical existence | Unrelated: lee: the side of something that is sheltered from the wind
Broader: physical entity: an entity that has physical existence | Unrelated: xanthophyll: yellow carotenoid pigments in plants and animal fats and egg yolks
Broader: physical entity: an entity that has physical existence | Unrelated: dinner service: a table service for serving dinner
Broader: physical entity: an entity that has physical existence | Unrelated: australopithecus robustus: large-toothed hominid of southern Africa; from 1.5 to 2 million years ago; formerly Paranthropus