It is present in every cell in all parts of the body, including the brain and nervous system, muscle, skin, liver, intestines, heart and skeleton.
(It; is; present in every cell in all parts of the body, including the brain and nervous system, muscle, skin, liver, intestines, heart and skeleton)
It
is
present in every cell in all parts of the body, including the brain and nervous system, muscle, skin, liver, intestines, heart and skeleton