Neurons find each other during development through chemical guidance cues
Extensive developmental neuroscience literature confirms that developing neurons and their growing axons utilize specific chemical guidance cues, such as netrins, slits, semaphorins, and ephrins, to navigate toward their correct targets and form functional neural circuits.
The claim states that neurons find each other during development through chemical guidance cues. Both provided papers describe the molecular mechanisms of axon guidance, specifically detailing how families of diffusible and contact-mediated chemical cues (like netrins, slits, semaphorins, and ephrins) direct growing axons to their targets. There is no evidence refuting the core concept, so the claim is supported.
Sergi Roig Puiggros. Molecular mechanisms orchestrating commissural axon guidance. https://doi.org/10.70675/9709d6aaz37b7z4de2za537zd7f1bf648566
Paper 0 details how diffusible factors and proteins like netrin-1 act as chemical guidance cues to direct commissural axon migration and crossing during neural development.
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Hao Sun. Molecular Navigation: How Axon Guidance Cues Shape Neural Circuits. 2025. https://doi.org/10.54254/2753-8818/2025.ld25940
Paper 1 discusses how four major ligand families, including netrins, slits, semaphorins, and ephrins, provide combinatorial attract-repel chemical signals essential for axon guidance and neural circuit assembly.
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