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Fig. 2 | Frontiers in Zoology

Fig. 2

From: A microCT-based atlas of the central nervous system and midgut in sea spiders (Pycnogonida) sheds first light on evolutionary trends at the family level

Fig. 2

Intersegmental nerves in the ventral nerve cord of Nymphonidae. A Nymphon gracile, male, cross section through the posterior portion of trunk segment 2, µCT scan. The large black arrowheads point to the paired ISN. White arrowheads mark areas in which intersegmental nerve projections contact the ventral longitudinal musculature. The stippled brackets indicate the positions of the sections shown in B and B’. B, B’ N. grossipes, male, CLSM scans (blend mode) of synapsin (red) and tyrosinated alpha-tubulin (gray) immunolabeling with nuclear counterstain (blue), horizontal sections, B lies dorsal to B’. The large black arrowheads indicate the paired intersegmental nerve. Note synapsin labeling at the neuromuscular junction (white arrowheads) of the ventral longitudinal musculature

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