- Quantitative and sensitive detection of the SARS-CoV spike protein using bispecific monoclonal antibody-based enzyme-linked immunoassay. Sunwoo, H.H., Palaniyappan, A., Ganguly, A., Bhatnagar, P.K., Das, D., El-Kadi, A.O., Suresh, M.R. J. Virol. Methods (2013)