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What is a Hydra Ls for a slide set?

April 26, 2017Biology hydra LS Mathematics slide

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What is a Hydra Ls for a slide set?

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Ls means “longitudinal section”. The whole Hydra isn’t on the slide, but just a thin slice through it from top to bottom. On other slides you may see “cs” or “xs”, either of which means “cross section”, a thin slice taken transversely through the body.