Different components of blood can be separated by their densities in a centrifuge. this is because blood is:

This is because blood is a SUSPENSION. Blood is composed of different type of particles with different densities. Blood is made up of platelets, white blood cells, red blood cells and the plasma. Blood is an heterogeneous mixture, which mean that all the components of the blood can be separated from one another. A suspension is a mixture which separate out when left standing; blood can be described as a suspension. 

In fact it is not just nuclear fusion and fission that  can  transform  matter  (or mass)into energy. any time  energy  is produced, some small amount of  matter  or mass isconverted into energy.