Hydra are freshwater organisms, only a few millimeters in length. Here, muscle fibers are in sepia and the nerve net is in blue/green. Disclaimer: AAAS and EurekAlert! are not responsible for the ...
Hydra vulgaris in control media: Ectoderm muscle activity before contraction (left) and after contraction (right). Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news ...
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