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Figure 1


Fig. 1. Temporal identity gene expression in the NB3-1 lineage of the Drosophila CNS. (A) NB3-1 (encircled with dashed line) sequentially expresses Hb, Kr, Pdm and Cas. A portion of one hemisegment is shown, with Engrailed marking the most-posterior neuroblast (NB) rows 6/7 (blue). Midline, left; anterior, up. Embryonic staging is from Campos-Ortega and Hartenstein (Campos-Ortega and Hartenstein, 1985): early stage 10 (E10), when NB3-1 forms; late stage 10 (L10); early stage 11 (E11); mid stage 11 (M11); late stage 11 (L11). Scale bar: 10 µm. (B) Summary of gene expression in NB3-1.