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.
Serum is the liquid part of the blood after the coagulation of blood cells. It is the watery fluid after the formation of blood clot, without the clotting factors. It contains 90â water, proteins, electrolytes, antibodies, antigens and hormones. Volume of serum is somewhat less than that of plasma.