Gastrin (1-17)/BSA is an antigen-adjuvant conjugate formed by the coupling of Gastrin (1-17) and Bovine Serum Albumin (BSA). By conjugating the antigen with a protein adjuvant , the production of antigen-specific antibodies in vaccine models can be enhanced. The conjugate does not affect protein folding or destroy major epitopes, and it can enhance cross-presentation and the production of antigen-specific T cells.