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Fig. 6 | Frontiers in Zoology

Fig. 6

From: The “amphi”-brains of amphipods: new insights from the neuroanatomy of Parhyale hawaiensis (Dana, 1853)

Fig. 6

Synapsin labeling of the brain of Parhyale hawaiensis. a Frontal vibratome section of the anterior part of the lateral and medial protocerebrum of the brain hemisphere. (A1) Magnification of the lamina showing the organization in spherical subunits with peripherally concentrated immunoreactivity. (A2) Cross section through the dorsomedial part of the lateral protocerebrum showing a weak distinction of a cap-like structure that potentially represent the hemiellipsoid body. b Sagittal vibratome section of the lateral antenna 1 neuropil showing a weak horizontal division into two equally sized parts. c Frontal vibratome section of the deutocerebral chemosensory lobe of the left brain hemisphere. The medial and lateral foramina are discernable (double-arrows). (C1) Magnification of the olfactory glomeruli showing the spherical to wedge-shaped appearance as well as a weak division into cap and base (brackets). Insets (bottom left corner) show position and orientation of depicted sections in the brain. Abbreviations: ampn anteromedial protocerebral neuropil, dcl deutocerebral chemosensory lobe, hn/tm hemiellipsoid body/ terminal medulla complex, la lamina, lal lateral accessory lobe, lan lateral antenna 1 neuropil, lo lobula, me medulla, og olfactory glomeruli, pmpn posteromedial protocerebral neuropil, [numbers] somata cluster. Scale bars: 25 μm

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