A ml is a unit of volume. The letters 'ml'
stand for millilitre. There are 1000 millilitres in a litre.
A mg is a unit of mass. The letter 'mg' stand for milligram. There
are 1000 milligrams in a gram. (Note, not a kilogram, but a GRAM).
CC is another measurement of volume. It stands for cubic
centimetre.
A cubic centimetre is equal to a millimetre. Both represent the same
volume of space.
1000cc is equivalent to a litre. 1000ml is also equivalent to a litre. This
means that when a medicine dose is 10ml, you can measure the same amount in
centimetres as 10cc.
It’s very important that when measuring drugs, whether by weight or
volume, you make sure your dosage is correct. Mistakes can be lethal,
particularly for children and animals.