- Detection of antibodies to L1, L2, and E4 proteins of human papillomavirus types 6, 11, and 16 by ELISA using synthetic peptides. Le Cann, P., Chabaud, M., Leboulleux, D., Mougin, C., Mayelo, V., Legrand, M.C., Calvet, C., Afoutou, J.M., Coll-Seck, A.M., Coursaget, P. J. Med. Virol. (1995)