Quantitation of putative glycoprotein X in bioengineered pseudorabies vaccine virus culture medium by ELISA

Abstract An enzyme-linked immunosorbent assay has been developed for the detection and quantitation of putative pseudorabies glycoprotein X (gX) in bulk bioengineered PRVδgXδtk-1 pseudorabies vaccine virus culture medium supernatants. The assay has a dynamic range of 0.2–25 ng, with a best linear region of 0.4–12.5 ng (correlation coefficient = 0.99) which permits 1 ppm discrimination for gX.