Fig. 1
From: The development of early pioneer neurons in the annelid Malacoceros fuliginosus
Development of early larval stages of Malacoceros fuliginosus. a-d Light microscopic images of larval development. e, f SEM images showing the dorsal view of Malacoceros fuliginosus larva. g-m Nervous system development in Malacoceros fuliginosus as revealed by acetylated α-tubulin (ac-tubulin) immunolabeling (green). The primary ciliated structures such as apical tuft (at), prototroch (prt) and telotroch (tel) are also revealed. The arrowheads point to the developing posterior pioneer neuron (PPN) and bifurcating axons. Arrows point to the first ventral nerve cord commissure. Scale bars: 20 μm. ch: chaetae