Gibberellins/BSA is an antigen-adjuvant conjugate formed by the linkage of Gibberellins with bovine serum albumin (BSA). This conjugation enhances the production of antigen-specific antibodies in vaccine models by coupling the antigen with a protein adjuvant. The conjugate does not alter protein folding or disrupt major epitopes, while also promoting cross-presentation and the generation of antigen-specific T cells.