abstract |
An immunogen of the structure ** Formula ** where accm is a carrier material that confers antigenicity; n> = 0 or 1; X is a heteroatom, preferably nitrogen, oxygen or sulfur; Y is a straight chain, substituted or unsubstituted arylene or alkylene moiety of C1-10, preferably C2-6; Z is, before conjugation with accm, carboxy, dithiopyridyl, maleimide, amino, hydroxy, thiol, thioester or an aldehyde moiety. |