Stem
____________________
and
derived
products
present
enormous
potential
for
new
medical
treatments
.
Learn
about
stem
cell
types
,
current
and
potential
uses
,
ethical
issues
,
and
the
state
of
research
and
practice
.
You've
probably
heard
about
stem
cells
on
the
news
,
and
you
may
have
____________________
if
they
could
help
you
or
a
loved
one
with
a
serious
illness
.
You
might
wonder
what
stem
cells
are
,
how
they
are
used
to
treat
disease
and
injury
,
and
why
they
are
the
subject
of
such
vigorous
debate
.
Here
are
some
answers
to
the
most
frequently
asked
questions
about
stem
cells
.
What
are
Stem
cells
?
Stem
cells
are
the
____________________
material
of
the
body
;
from
them
all
other
cells
with
____________________
functions
are
generated
.
Under
the
right
conditions
in
the
____________________
or
in
a
____________________
,
stem
cells
divide
to
form
more
cells
called
daughter
cells
.
These
daughter
cells
become
new
stem
cells
(
self
-
renewal
)
or
specialized
cells
(
differentiation
)
with
a
more
specific
function
,
such
as
blood
cells
,
brain
cells
,
heart
____________________
cells
,
or
bone
cells
.
No
other
cell
in
the
body
has
the
natural
ability
to
generate
new
types
of
cells
.
