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Fig. 7. Model for the transcriptional regulation of ATML1 in
embryogenesis. (A) Regulatory organization of the ATML1
promoter. Target regions of putative positional signals (arrows) are
indicated. Sequence numbering refers to the distance in bp from the
transcription start site (+1). (B) Regulation of ATML1
expression in embryogenesis. Each color represents a different expression
domain. The regulatory sequences that mainly contribute to the expression in
each domain are indicated (see text for details). Successive embryo stages are
depicted (from left to right): one-cell stage, eight-cell stage, globular
stages, heart stage.