Additional file 1.

Figure S1. Anterior nervous system in an almost fully developed embryo of the onychophoran Epiperipatus isthmicola. Confocal maximum projection. Dorso-lateral view (anterior is left, dorsal is up). Anti-acetylated α-tubulin immunolabelling. Abbreviations: an, antennal nerves; br, brain; cn, developing central brain neuropil; jn, jaw nerve; ln, paired leg nerves; mo, mouth position; nc, ventrolateral nerve cords; sn, slime papilla nerves. Scale bar: 200 μm.

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Mayer et al. BMC Evolutionary Biology 2010 10:255   doi:10.1186/1471-2148-10-255