| prov:value
| - Y can be toxins, antibodies, antibody fragments antigens, hormone receptors, parasites, cells, haptens, metabolizes. allergens, nucleic acids, nuclear materials, autoantibodies, blood proteins, cellular debris, enzymes, tissue proteins. enzyme substrates, coenzymes. neuron transmitters, viruses, viral particles, microorganisms, proteins, polysaccharides, chelators, drugs, and any other member of a
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