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. 2017 Dec 14;4(6):ENEURO.0404-17.2017. doi: 10.1523/ENEURO.0404-17.2017

Figure 1.

Figure 1.

Top2β is expressed at high levels in postmitotic MNs. A, B, Low Top2β expression in MN progenitors (olig2+) at e11.5 (A) as compared to the lateral spinal cord where postmitotic MNs are located (B). C–E, Top2β is upregulated in postmitotic MNs at brachial levels at e11.5 (C), continues to be expressed as MNs navigate to their targets (e12.5; D) and high levels of expression are maintained until later stages of MN development (e14.5; E). F, Top2β expression in MNs at e12.5 at thoracic spinal cord levels. Scale bar = 50 μm.