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FIND
MEDIPEDIA
Section
Index
E
verything you need to know is here
MediHealth
Y
our guide to medical terms & conditions
MediMeds
Y
our medicines explained
MediTests
Y
our tests and investigations explained
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Oxygen
Explanation
Explanation
Oxygen
is a gas that you breathe in and without it you would die. Its chemical symbol is O2. Inside your body,
oxygen
is carried around in your
blood
, and it is what gives you your energy.