Summary
When tissues of spirochete-infected brine shrimp (Artemia salina) were examined by electron microscopy, tubular structures were often seen closely associated with intracytoplasmic spirochete profiles. These tubules were never observed in association with spirochetes found in the haemocoel or other extracellular spaces. Since the trilaminar layer comprising the wall of the tubules was identical in ultrastructure to the outer envelope of the spirochete, these structures were interpreted to be finger-like extensions of the spirochete outer envelope.
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The author thanks Dr. Ruth Ellen Bulger and Dr. Ray B. Nagle for helpful comments on the manuscript. This research was supported by USPHS Fellowship 5 FO2 GM25, 538-02 and USPHS Research Grant GM 16598 from the National Institutes of Health.
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Tyson, G.E. Tubular structures associated with intracytoplasmic spirochetes. Cell Tissue Res. 158, 333–337 (1975). https://doi.org/10.1007/BF00223830
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DOI: https://doi.org/10.1007/BF00223830