Fig. (3) (a) The effect of BUD on the phosphorylation of ERK1/2. Bone marrow CD34⁺ cells were stimulated with IL-5 in the presence or absence of BUD (10^-8M). Western blot using anti-ERK antibodies show that there is phosphorylation in sample three only (lane 9) and BUD has no effect (lane 10). (b) The effect of BUD on the phosphorylation of p38 MAPK. Bone marrow CD34⁺ cells were stimulated with IL-5 in the presence or absence of BUD (10^-8M).Western blot using anti-p38 antibodies show that there is phosphorylation in sample two only (lane 6) and BUD has no effect (lane 7).