Fig. 1.
Amplified wt1-specific mRNA and β-actin–specific mRNA in AML blast cells (length of PCR product: 857 bp [wt1] and 652 bp [β-actin]). Lane 1, marker (100-bp ladder, Hind/EcoRI-digested λ DNA); lane 2, negative control; lane 3, positive control (cell line HEL 92.1.1); lanes 4 and 5, wt1-negative AML; lanes 6 and 7, wt1 low AMLs; lanes 8 and 9, wt1 intermediate AML; lanes 10 and 11, wt1 high AMLs. Amount of wt1-specific mRNA was determined by quantitative PCR: lanes 4 and 5, <0.0001 fg/μg total RNA; lane 6, 0.023 fg/μg; lane 7, 0.031 fg/μg; lane 8, 0.186 fg/μg; lane 9, 0.367 fg/μg; lane 10, 19.037 fg/μg; lane 11, 9.484 fg/μg.