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Fig. 5 | Zoological Letters

Fig. 5

From: Structure, function and cell dynamics during chaetogenesis of abdominal uncini in Sabellaria alveolata (Sabellariidae, Annelida)

Fig. 5

a 3D model of the chaetal formative site, reconstructed using the aligned serial ultra-thin sections. Consequent developmental stages of uncini are labeled from A1–J. This numbering is employed all through the images when referring to these specific developmental stages. b TEM image of the formative site showing the formation of the long rostral rod in J and the formation of the socket in D. c TEM image of the formative site showing the formation of the adrostral rod in H and G, the formation of the socket in E and F, and the formation of the rostrum in A3. Note the chaetal canal of B1 (chB1) in the lower right. F1–F3 follicle cells, CB chaetoblast, r rostrum, t tooth, arrow heads mark the adluminal adherens junctions

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Zoological Letters

ISSN: 2056-306X

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