Fig. (2) Size distribution of aluminium adjuvant particles. Aluminium adjuvants, non-labelled and lumogallion labelled, were re-suspended in 150 mM NaCl or cell culture medium containing 10% fetal calf serum (R10) before size determination of the adjuvant particles. A. Alhydrogel^® re-suspended in 150 mM NaCl (❍) or in cell culture medium (●). B. Adju-Phos^® re-suspended in 150 mM NaCl (❏) or in cell culture medium (■). C. Lumogallion (100 μM) labelled Alhydrogel^® re-suspended in 150 mM NaCl (❍) or in cell culture medium (●). D. Lumogallion (100 μM) labelled Adju-Phos^® re-suspended in 150 mM NaCl (❏) or in cell culture medium (■).