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In our present study, we investigated the mechanism of Cd(II) biosorption from aqueous solution by Pseudomonas plecoglossicida using different instrumental techniques. The adsorption kinetics fitted well with the pseudo second-order model, suggesting that the Cd(II) adsorption by P. plecoglossicida consisted of a chemisorption and a physisorption process.(More)
In this paper, a novel time-resolved fluorescence immunoassay (TRFIA) is described that allows the simultaneous quantitative detection of hepatitis B virus surface antigen (HBsAg) and hepatitis B e antigen (HBeAg) in human serum to aid the diagnosis and monitoring of hepatitis B virus infection. The proposed method was developed based on a two-step sandwich(More)
OBJECTIVE The fraction of circulating cell-free fetal (cff) DNA in maternal plasma is a critical parameter for aneuploidy screening with non-invasive prenatal testing, especially for those samples located in equivocal zones. We developed an approach to quantify cff DNA fractions directly with sequencing data, and increased cff DNAs by optimizing library(More)
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