The trial is among the first times the therapy has been tested on human patients 

Their own bone marrow cells were put into their blood within 72 hours of stroke

One scientist said their nerve cells were regrowing in a way not usually seen

More than 100,000 strokes happen annually in the UK and 795,000 in the US

Stroke patients have recovered faster after being injected with stem cells taken from their own bone marrow, scientists say.

Twenty-five survivors had their marrow cells infused back into their blood and saw their recovery boosted by one point on a six-point scale.

Researchers at the University of Texas in Houston now hope to move forward with broader tests of the experimental therapy.