ICSBP-transcript numbers in a dilution series of mononuclear cells from a normal healthy volunteer with cells fromICSBP-nonexpressing cell line K-562. ICSBP-mRNA levels were detected by a semi-quantitative RT-PCR assay. Five different dilutions were done and the percentages of normal cells (ICSBP-expressing cells) were shown (0%, 10%, 50%, 90%, and 100%). The mean of three experiments is displayed (±SEM).