1
Circulating immunoglobulin G antibody activity to the bundle- forming pilus subunit A was readily detected in all children.
2
Immunoglobulin A antibody activity to the bundle- forming pilus subunit A was detected in 75% of colostrum samples.
3
Affinity purified recombinant bundle- forming pilus subunit A was used in immunoblot analysis to detect antigen-specific serum immunoglobulins G and A, and colostrum immunoglobulin A.
4
The frequency of immunoglobulin A antibody activity to the bundle- forming pilus subunit A in serum was 83.3%.