Paragraph 1
Scientists found that
turns hair grey in mice. Stem cell
from Harvard tested mice to find
stress affected
. The scientists injected the mice with the
-giving ingredient in chili peppers. This caused a hair-colouring
in the mice to overwork in
to the stress. It used up all colour-regenerating
. The mice's hair quickly turned white. A
said this was, "beyond
I imagined".
