The inclusion of polyethylene oxide to a peroxidase-antibody conjugate suspension greatly stabilized conjugate activity which showed no loss during storage for 36 days at 30-degrees-C. This stabilization not only economizes enzyme immunoassays but also permits its use under field conditions lacking refrigeration.
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BLAIS B W, 1989, Biotechnology Techniques, V3, P23, DOI 10.1007/BF01876216