Słownik angielskiego
The gases and fluids contained about 40 parts of gold per billion.
The fluid usually contains mucus and small amounts of blood.
The fluids given must contain both sugar and salt in the proper amounts.
In addition, the fluids (blood) containing the germs have to be replaced.
This fluid contains fetal cells which can be studied in the laboratory.
They are mixed with the fluid containing an unknown concentration of target to be measured.
Amniotic fluid contains cells and other substances that can give clues about a baby's health.
The term heterogeneous here means a fluid containing particles.