Fig. (5) Recovered human leukocytes after incubation with various concentrations of adjuvants. Human leukocytes were co-cultured for 2h with different concentrations of Alhydrogel® (black pile) respective Adju-Phos® (grey pile). By means of specific CD-markers four different populations of leukocytes were identified using flow cytometry and cells of the respective leukocyte population are expressed as % of cells obtained after incubation in culture medium. A. T-lymphocytes. B. Monocytes. C. Granulocytes and D. B-lymphocytes. Data presented as mean +/- SD of three independent donors.