Stem cells can be taken from human embryos and manipulated so that they develop into other types of cells, such as muscle, nerve, 
(Stem cells; can be taken; from human embryos) (Stem cells; manipulated; so that they develop into other types of cells, such as muscle, nerve) (they; develop; into other types of cells, such as muscle, nerve)
Stem cells Stem cells they
can be taken manipulated develop
from human embryos
so that they develop into other types of cells, such as muscle, nerve
into other types of cells, such as muscle, nerve