E. coli adhesin F4 (F4ab, F4ac, F4ad), at least … .2.1 SA. U* E. coli adhesin F5, at least……………………… 1.7 SA. U* E. coli adhesin F6, at least ……………………… 1.4 SA. U* E. coli adhesin F41, at least…………………… .1.7 SA. U*