• DID YOU KNOW?
  The lymph tubes in your neck, armpits and groin form clusters, or ...

• Cell soldiers
  Your white blood cells are your most important defence against germs. ...

• Fooled again
  Once your lymphocytes have made an antibody, they can make it again ...

• Soft spots
  A newborn baby has soft patches of membrane between its skull bones. ...

• DID YOU KNOW?
  Most babies are about 50cm (19.5in) tall at birth. A baby's height ...

• More muscle
  As you grow up, your muscles get bigger and you get stronger. At ...

• Baby brain
  A newborn baby's head looks huge in comparison to its body. Its head ...

• Time for a change
  Between the ages of 11-18, you change from a child into an adult. ...

• Life expectancy
  After adolescence, your body slowly begins to age. But people in ...

• Growing old
  As people reach the age of 55-60, their bodies take longer to repair ...