Figure 4.
Spatial miRNA promoter activity. (A) Percentage of miRNA promoters that drive expression in a survey of tissues. (B) Multiple miRNA promoters drive expression in various parts of the somatic gonad, including gonadal sheath, vulva, and uterus. (Top) DIC images; (bottom) GFP fluorescence. (C) Multiple miRNA promoters drive GFP expression in the nervous system. (Top) DIC images; (bottom) GFP fluorescence. Additional images can be found in the EDGEdb database (Barrasa et al. 2007). (D) Most miRNAs as well as TFs and “all genes” promoters confer GFP expression in a tissue-specific manner.
