LacZ gene expression driven by different promoters in megakaryocytes.

The percentages of LacZ-positive cells in megakaryocytes driven by various promoters plus the TK-LacZ gene were examined as described in Figure 2. The details of individual constructs are explained in the text. Data are shown as mean ± standard deviation. All of the results except −598/−400:TK:LacZ are significantly different from the data for the wild type (P < .05 by t test). All of the results except 4 × ETS are significantly different from the results for TK alone (P < .05 by t test). Each experiment was performed 2 or 3 times, and representative data are shown.