FIG. 6.

MEIS1 levels in Tpo^−/− mice. Whole bone marrow cells were prepared from control C57BL/6 and Tpo^−/− mice. The cells were pooled (for experiment 1, n = 4 C57BL/6 mice and n = 4 [Tpo^−/− mice]; for experiment 2, n = 4 C57BL/6 mice and n = 5 Tpo^−/− mice), and Sca-1⁺/c-kit⁺/Gr-1⁻ cells were collected for real-time PCR analysis. Each column represents an average of MEIS1 mRNA levels normalized to a GAPDH internal control ± standard deviation for two experiments (hatched column, C57BL/6; black column, Tpo^−/−).