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Figure 6 | Frontiers in Zoology

Figure 6

From: Comparative neuroanatomy suggests repeated reduction of neuroarchitectural complexity in Annelida

Figure 6

Neuroanatomy of annelid representatives as revealed by a combination of immunohistochemistry (red) and cell nuclei labeling (blue). Schematic drawings depict a dorsal view of the head of the animal, with the brain outlined in red and clusters of small-diameter cells outlined in blue. Immunostainings were produced by the following antisera: anti-FMRFamide (a, b, d), anti-histamin (c). Arrowheads point at columnar fiber elements in the anterior part of the central neuropil in H. medicinalis. ey eye. Scale bars: 100 μm.

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