Selective disruption of gap junctional communication interferes with a patterning process in hydra.
According to legend, if one of the hydra's heads was cut off, two more would grow in its place.
The nervous systems of the radially symmetric organisms the ctenophores (comb jellies) and cnidarians (which include anemones, hydras, corals and jellyfish) consist of a diffuse nerve net.
We have heard a great deal about the frightful dangers of monopoly, about this hydra-headed monster, this tyrant.
The hydra-headed monster of nationalism is a rapacious beast which, when given the opportunity to feed, tends to devour peoples, populations and nations.
However, those challenges are diffuse and hydra-headed in their profusion—and they are likely to become more so as digital services come on stream.
As soon as one false statement is knocked on the head then, like a hydra, another one appears and has to be refuted.
We do not have this at the moment: we have a hydra-headed structure for community regeneration, lifelong learning and family support.
