Alginic acid/KLH is an antigen-adjuvant conjugate consisting of Alginic acid linked to Keyhole Limpet Hemocyanin (KLH). Conjugating the antigen with a protein adjuvant enhances antigen-specific antibody production in vaccine models. This conjugation does not alter protein folding or disrupt primary epitopes, and it enhances cross-presentation and antigen-specific T cell production.