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. Author manuscript; available in PMC: 2010 Jun 1.
Published in final edited form as: J Struct Biol. 2009 Mar 6;166(3):316–328. doi: 10.1016/j.jsb.2009.02.014

Figure 9.

Figure 9

Laminate structure of girdle bands. (a) Section in the girdle band plane near the cell wall showing an enrichment of organic material (bracket) of the correct width and at the correct location of a forming girdle band. Arrows denote filamentous material in a similar location as identified in Fig. 8. (b) Another section of the same cell as in (a), showing the precursor material of the girdle band in side view (bracket). (c) Cross-section of a girdle band showing the electron transparent central section (arrow) we interpret as being organic material. (d) Girdle band laminate structure in the process of separation. (e) Cross-sectional view of nanopores in girdle bands, which have a similar thin occlusion as was seen in the valve (Fig. 7h). The occlusion corresponds in position to the organic center of the girdle bands.