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Figure 7 | Frontiers in Zoology

Figure 7

From: A new look at the ventral nerve centre of Sagitta: implications for the phylogenetic position of Chaetognatha (arrow worms) and the evolution of the bilaterian nervous system

Figure 7

A, B: Photomontages of the complete ventral nerve centres (whole mounts, ventral views) of two different specimens of adult Sagitta setosa; imunolocalization of RFamide (images are black-white inverted) in the ventral nerve centre (ventral views). Individually identifiable neurons that can be homologized between the two individuals are labelled with letters (for details see text). Abbreviations: CO main connectives, IB intermediate bundle, LB lateral bundle, MB medial bundle. Scale bars: 50 μm.

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