Transporting this protein is the main job of your body's erythrocytes
The main job of the plasma is to transport blood cells throughout your 
body ... Red cells contain a special protein called hemoglobin, which helps carry
... [DOC] [TLE] Blood - Biology Encyclopedia - cells, body, function, human, system ... [PAR] Blood is the bodily fluid responsible for transport of materials and waste ... 
Proteins, sugars, salts, white blood cells, and platelets make up the remainder.