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Hydra
genus, hydrozoans
Nucleotide Protein
Hydra oxycnida
species, hydrozoans
Hydra sinensis
Hydra circumcincta
Hydra oligactis
(brown hydra), species, hydrozoans
Hydra vulgaris
(swiftwater hydra), species, hydrozoans
Hydra viridissima
(green hydra), species, hydrozoans
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