| 摘要 |
New and useful stable peroxidase compositions are disclosed which are particularly useful as reagents in enzyme immunoassay (EIA) tests. The novel peroxidase compositions contain polyvalent ions of groups 3 and 4 of the Periodic Table. These novel compositions are stable even at low concentrations of peroxidase, and are relatively invulnerable to freeze-drying. Preferably, the polyvalent ions selected are those of Al, Zn, Mg, Fe, and Cu.
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