Dye-filling has been used extensively to study the development and morphology of sensory neurons in the nematode C. elegans . Here, we report a modified dye-filling protocol that improves the robustness of amphid, phasmid, and inner labial neuron dye-filling in C. elegans , as well as in the nematode satellite model P. pacificus. Our method also allows for the consistent visualization of male specific ray sensory neurons and associated support cells in these species.
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