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Fig. 3 | BMC Evolutionary Biology

Fig. 3

From: The anatomy and development of the nervous system in Magelonidae (Annelida) – insights into the evolution of the annelid brain

Fig. 3

Magelona mirabilis, histological cross sections (5 μm), Palmgrens silver impregnation, frontal (A) to caudal (C). a: The anterior part of the brain (abr) is composed of a compact trapezoid neuropil. so: somata. b: Neurites in the dorsal part of the brain (dpbr) is composed of neurites which are arranged in parallel to the body axis. c: Some neurites are stronger impregnated by silver ions than the surrounding neurites. mo: mouth

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