In several embodiments an LSECtin binding moiety (LBM), such as an antibody or antibody fragment, is conjugated to a plurality of antigens, or antigenic fragments (e.g., X1, X2, X3, Xn) forming a LBM complex having the formula [A-B-X1-B-X2-B-X3-B-Xn], where A is an LSECt...