The number of CD34⁺ thy-1⁺cells in the cultures is proportional to the concentration of SCM-LIF.

Data for the number of CD34⁺ thy-1⁺ cells in the CD34⁺ thy-1⁺–positive wells are presented as the mean ± SD of the total number of CD34⁺thy-1⁺–positive wells in each culture condition. See Figure 1 legend for additional information.