By fiddling with the cytoskeletons of real - life hydras, researchers found that the pond polyps rely on mechanical forces as well as molecular cues to regenerate head and tentacles in the right places (SN: 3/4/17, p. 19). (sciencenews.org)
But an increasing number of scientists are exploring molecular cues that could allow humans to regrow arms and legs the same way starfish or salamander can replace their limbs or tails (click here for a time - lapse video). (discovermagazine.com)
Eager to establish himself, he chose a natural extension of the work he did with Tessier - Lavigne: identifying the molecular cues that guide axon growth toward and away from the brain. (sciencemag.org)