A modified double antibody sandwich ELISA (enzyme-linked immunosorbent assay) for detection of TGEV (transmissible gastroenteritis coronavirus) and of specific antibodies S. BERNARD, H. LAUDE, I. LANTIER, Elizabeth BOTTREAU and J. M. AYNAUDAnn. Zootech., 35 3 (1986) 310DOI: https://doi.org/10.1051/animres:19860342