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Fig. 7. Lens-specific regulation of Foxe3 promoter in transgenic mouse
embryos. (A) The 6.2 kb promoter sequence upstream of the SmaI site
(Brownell et al., 2000) was
divided into four blocks, A-D, from the proximal side, and in combination
ligated to a lacZ expression cassette, and primary transgenic embryos
were produced. Panels in the middle show transgene expression in the head
(lens and brain) under low magnification (left) and in the lens under high
magnification (right). The numbers in the right panel indicate cases of
transgene expression in transgene (PCR)-positive embryos. (B) Schematic
presentation of Sip1/Smad8-responsive region, and major and minor lens
elements in Foxe3 promoter.