Final answer:
The buffy coat in a centrifuged sample of blood is composed of white blood cells and platelets.
Step-by-step explanation:
The buffy coat in a centrifuged sample of blood is composed of
white blood cells and platelets.
When blood is spun in a centrifuge, the heavier elements, such as the red blood cells, settle at the bottom, while the lighter elements, including the plasma, rise to the top. In between these two layers is a thin, pale layer known as the buffy coat.