Antibodies against TCP were able to protect baby mice against challenge with V. cholerae O1 of the classical but not of the El Tor biotype (Osek et al., 1994).
References
Osek et al., 1994: Osek J, Jonson G, Svennerholm AM, Holmgren J. Role of antibodies against biotype-specific Vibrio cholerae pili in protection against experimental classical and El Tor cholera. Infection and immunity. 1994; 62(7); 2901-2907. [PubMed: 7911787].