A THREE-HEADED hydra exists in various forms, primarily in Greek and Roman mythology, and as a symbol in other contexts. The ...

Although the result is infinitely less terrifying than the gigantic, many-headed monster of Greek mythology, scientists have succeeded in coaxing the real-life Hydra, a tiny freshwater polyp ...

That HEADY acts as a developmental switch to pattern the apical-basal axis of Hydra provides the first insight into how initial asymmetry is specified in lower metazoan animals. Furthermore ...