Fig. 4. Detailed view of sagittal sections of the brain of Octopus minor, shown according to the gross anatomy. (A) Representative magnified images at approximately +0.36 mm from the midline and visualized by Hematoxylin and Eosin staining. Scale bar=500 µm. (B) Representative magnified images at approximately +1.62 mm from the midline and visualized by anti-acetylated α-tubulin antibody and DAPI staining. Scale bar at ×40=400 µm and at ×200=100 µm. H&E, Hematoxylin and Eosin staining; acetyl. α-Tub, acetylated α-tubulin; DAPI, 4′,6-diamidino-2-phenylindole; Supra, supraesophageal mass; Sub A, anterior part of the subesophageal mass; Sub P, posterior part of the subesophageal mass; Optic, optic lobe; A, anterior; P, posterior; D, dorsal; V, ventral; b.a., anterior basal lobe; b.d.a., anterior dorsal basal lobe; b.d.p., posterior dorsal basal lobe; b.l., lateral basal lobe; br.po., postbrachial lobe; br.pr., prebrachial lobe; buc.p., posterior buccal lobe; buc.s., superior buccal lobe; ch.p., posterior chromatophore lobe; fr.i.l., lateral inferior frontal lobe; fr.i.med., median inferior frontal lobe; fr.s.l., lateral superior frontal lobe; fr.s.med., median superior frontal lobe; fun.p., posterior funnel lobe; g.opt., optic gland; n.visc., visceral nerve; opt., optic lobe; pe.a., anterior pedal lobe; pe.p., posterior pedal lobe; ped., peduncle lobe; prec., precommissural lobe; pv., palliovisceral lobe; subfr., subfrontal lobe; subv.a., anterior subvertical lobe; subv.p., posterior subvertical lobe; tr.cer., cerebral tract; v.l., lateral vertical lobe gyrus; v.med., median vertical lobe gyrus; v.med.l., medio-lateral vertical lobe gyrus; vas.d.l., lateral dorsal vasomotor lobe; vas.d.med., median dorsal vasomotor lobe; vas.ven., ventral vasomotor lobe.
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