Absolute zero is the coldest possible temperature, at which no heat is left in a substance and its particles display no motion whatsoever. Absolute zero is equal to 0 K on the Kelvin scale, which is... Absolute zero is the coldest possible temperature, at which no heat is left in a substance and its particles display no motion whatsoever.
Serum is plasma that has been allowed to clot. It is prepared in the same way as plasma; however, the blood is collected into a tube with no anticoagulant. While spinning in the centrifuge, the clot moves with the cells to the bottom of the blood collection tube, leaving the serum on top.
Both plasma and serum are important parts of blood. The blood comprises of plasma, serum, white blood cells (cells that fight foreign bodies) and red blood cells (cells that carry oxygen). The main difference between plasma and serum lies in their clotting factors.erum is the liquid part of the blood after the coagulation. They contain 6-8% of the proteins that make up blood. They are more or less equally divided between serum albumin and serum globulins. When blood is extracted and left to clot, the clot shrinks after some time.