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NB 7-3 |
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The NB 7-3 clone consists of only 3 to 5 neurons (mostly 4) in the lateral cortex They form an interneuronal fascicle projecting contralateral across the posterior commissure (7-3I). During stage 16 the dorsoposterior neuron in the cell cluster develops an ipsilateral posterior axon. At late stage 17 this projection ends in the posterior root of the intersegmental nerve or the segmental nerve; this fibre possibly represents a late differentiating motoprojection (7-3M). At least three of the 7-3I can be stained with an anti invected (engrailed, en) antibody. They are part of the posterior intermediate group (PIs, Cui and Doe, 1992) of en expressing neurons which also contains progeny of NB 1-2. Among the en expressing medial and intermediate NBs (NB 6-1, 6-2, 7-1, 7-2, 7-3 1-2; Doe, 1992), only NB 1-2 and NB 7-3 produce a subset of neurons that maintain en expression at stage 17.
Flybrain
Development
Neuroblast Lineage
NB 7-3
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