planarians
Flatworms’ Synapses Steer Body Shape
Flatworms’ Synapses Steer Body Shape
Aggie Mika | May 25, 2017
Just by perturbing the animals’ neural connections, scientists changed their regenerated forms—causing some to grow an extra head. 
Secrets of Re-sprouting Heads
Secrets of Re-sprouting Heads
Kate Yandell | Jul 24, 2013
Researchers identify a signaling pathway that can control how well flatworms regenerate the front parts of their bodies.
Model Citizen
Karen Hopkin | Mar 1, 2012
With an eye to understanding animal regeneration, Alejandro Sánchez Alvarado has turned a freshwater planarian into a model system to watch.