Comments on the morphology of the pre-or
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J. H. Swanepoel; Annemarie Avenant-Oldewage
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Article
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1992
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John Wiley and Sons
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English
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## Abstract A histological study of the preβoral spine and associated structures in __Argulus japonicus__ reveals that two exceptionally long and slender muscles casuse retraction of the spine into the spinal sheath. Originating from the body wall midβdorsally the two muscles proceed through the ne