title: Author response to letter to the editor by Marciani et al.
authors.forename: Gui
authors.initials: G
authors.lastname: Liu
authors.forename: Charlotte R
authors.initials: CR
authors.lastname: Kensil
mesh_terms: D000276:Adjuvants, Immunologic / Q000302:isolation & purification*; D031990:Quillaja / Q000737:chemistry*; D012503:Saponins / Q000302:isolation & purification*
chemical_list: D000276:Adjuvants, Immunologic; D012503:Saponins; C078785:saponin QA-21V1