The Known Immunologically Active Components of Astragalus Account for Only a Small Proportion of the Immunological Adjuvant Activity When Combined with Conjugate Vaccines - Hong, Feng; Xiao, Weilie; Ragupathi, Govind; Lau, Clara B. S.; Leung, Ping Chung; Yeung, K. Simon; George, Constantine; Cassileth, Barrie; Kennelly, Edward; Livingston, Philip O. (Planta Medica, 2011)