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Fig. 2. Identification of the e15 enhancer element within the
egl-15 promoter. egl-15 promoter fragments, from 2.0 kb to
0.8 kb, were used to drive expression of the clr-1 genomic coding
region. Rescue assays were performed in a clr-1(e1745ts) background.
Rescue activity is classified as strong (++), intermediate (+), weak
(+/), or no rescue ( ). n, the total number of
transgenic lines scored. The location of the egl-15 enhancer
(e15, from 1530 to 1296) lies between the dashed
lines.