Sentence examples for sera samples were determined from inspiring English sources
IgG, IgG1 and IgG2a antibodies in sera samples were determined using an indirect ELISA assay according to the manufacture's instructions (R&D Systems, USA).
Thirty-nine sera from 112 serum samples were determined as negative by SERELISA but were found to be positive both in the newly developed indirect IgG PCV2 Cap VLP-based ELISA and the PCR test.
The presence of anti-G1 antibodies in serum samples was determined by enzyme-linked immunosorbent assay in serial diluted (PBS/0.5% Tween-20) samples and internal standard samples (pooled sera from arthritis mice) as described [ 41].
The titer of N-specific antibodies in each serum sample was determined using a standard curve established with sera from mice immunized with MV in complete Freund's adjuvant and expressed in relative units.
The presence of FMDV RNA in these samples was determined and the generation of anti-FMDV antibodies within the sera was assayed.
The cut-off for positive samples was determined by taking the mean plus 3 standard deviations of twenty (20) non-immune sera for all antigens.
Sera and feces from mice treated with known quantities of ricin were processed and the concentration of ricin in samples was determined using both IPCR and traditional ELISA assays.
The average of duplicate samples was determined.
A total of 2100 sera samples were tested to determine the antibody of AIV type A and subtype H5N1 by indirect ELISA.
Each sample was determined in triplicate.
Each sample was determined in triplicates.
