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Fig. 2. Gill vasculature of Odontamblyopus lacepedii. Corrosion casts showing the four intact branchial arches (I–IV) of the left gills (a) and vascular details of the filaments and lamellae (b–d). A pair of filaments (holobranch) bears regularly spaced, well-developed lamellae (b). A network of vessels is apparent in the afferent but not efferent filament (c). Several lamellae have been removed from the single filament (hemibranch) to expose the intrafilamental circuit (arrowheads in c). The pillar cells (holes in the lamellae denoted by arrowheads in d) are arranged more or less in parallel with the outer marginal channel (OMC, d). Asterisks in (c) denote the discontinuous inner marginal channels (IMCs) of the lamellae. Arrows in (c and d) indicate the direction of blood flow. ABA afferent branchial artery; AFA afferent filamental artery; ALA afferent lamellar arteriole; EBA efferent branchial artery; EFA efferent filamental artery; ELA efferent lamellar areriole; L lamella. Scale bars: (a) 1 cm; (b) 500 μm; (c, d) 200 μm. With kind permission from Springer Science + Business Media: <Environmental Biology of Fishes, Respiratory vasculatures of the intertidal air-breathing eel goby, Odontamblyopus lacepedii (Gobiidae: Amblyopinae), 82, 2008, 341–351, Gonzales et al., Fig. 3>.

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