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Quarterly Journal of Microscopical Science, Vol s3-101, 481-485, Copyright © 1960 by Company of Biologists

The Fine Structure of Epithelium and Mesogloea in a Sea Anemone

E. J. BATHAM 1

1 Portobello Marine Biological Station, Portobello, New Zealand

Ultra-thin sections of mesenteries of a sea anemone provisionally referred to Metridium canum have been examined in the electron microscope. The flagella show the common 9:2 fibrous structure, the peripheral fibres fusing basally and appearing to run through continuously to basal corpuscle and banded rootlet. Arising from the epithelial surface, as well as flagella, are numerous palisade processes, some radiating from flagella bases. These extensive processes show internal fibrous structure. Mesogloeal fibres show strong banding, with a period of about 42 to 46 mµ.






© The Company of Biologists Ltd 1960