Hydra

"Hydra" is a descriptor in the National Library of Medicine's controlled vocabulary thesaurus, MeSH (Medical Subject Headings). Descriptors are arranged in a hierarchical structure, which enables searching at various levels of specificity.

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A genus of freshwater polyps in the family Hydridae, order Hydroida, class HYDROZOA. They are of special interest because of their complex organization and because their adult organization corresponds roughly to the gastrula of higher animals.


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This graph shows the total number of publications written about "Hydra" by people in this website by year, and whether "Hydra" was a major or minor topic of these publications.
Bar chart showing 4 publications over 4 distinct years, with a maximum of 1 publications in 1997 and 2017 and 2020 and 2022
To see the data from this visualization as text, click here.
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