Why is the elephant trunk so wrinkly? It sounds like the start of one of Aesop’s fables. But in a new study in the journal Royal Society Open Science, researchers offer up some answers. This all ...

The trunk of a tree is like the stem of a small plant, only a lot stronger. It too carries water around the tree. Roots The roots of a tree can go very deep under the ground and spread out a long way.

The stem cells formed a miniature 'trunk-like' structure, which spontaneously elongated to 1-2 millimetres in length. It contained developing neural tissue and bone stem cells, ...

"To grow a thicker stem or trunk, they need another type of stem cell." Plant stem cells have largely been overlooked because they don't have applications for human biomedical research.