The effect of MAFP on arachidonic acid release. Day-2 cultured CD34⁺ cells were incubated with either 5 μmol/L MAFP or DMSO diluent for 15 minutes, followed by priming with either 0.01% FCS diluent, 100 ng/mL SCF, or 500 ng/mL TPA, and activated with either 1 μmol/L A23187 or PBS. The data shown are the mean ± 1 SE of 3 experiments. The significance of the difference between MAFP- and DMSO-treated samples is shown (Student’s pairedt-test).