develops into immature neuron immature secondary neuron immature secondary motor neuron 2024-07-05T14:27:07Z fly_anatomy.ontology FBbt:00053279 Secondary neuron that will develop into an adult motor neuron, but is still in an immature state (Nguyen et al., 2024). These neurons remain relatively metabolically and functionally inactive during the larval stage (Nguyen et al., 2024). VFB:FBbt_00053279 secondary motor neuron