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Sensitivity and specificity of the immuno-colloidal gold chromatographic test strips assay for the detection of SEA to SEE. Series of dilutions (0–5 ng/mL) of SEA to SEE (A–E) were prepared in phosphate buffer that detected by the test strips for SEA to SEE, respectively. 100 ng/mL of SEA to SEE (F–J) were prepared in phosphate buffer for the specificity detection of the test strips.
