Abstract
The interaction of penicillin G with human serum proteins was evaluated by three different techniques: rate of dialysis, cross-linked dextran exclusion, and ultracentrifugation. The rate-of-dialysis technique demonstrated that penicillin G binding to serum was immediate but incompletely reversible. Cross-linked dextran adsorbed or trapped significant amounts of penicillin G, necessitating correction factors of more than 10%. Ultracentrifugation was found to be the most reliable method for quantitative protein-binding determinations of penicillins.
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Selected References
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