When a blood sample is centrifuged the buffy coat represents the "fraction of an anticoagulated blood that contains less than one percent of the total blood - the leukocytes and platelets.
<h3>What happens after centrifugation?</h3>
Following centrifugation, the buffy coat is the fraction of an anticoagulated blood sample that comprises the majority of the white blood cells and platelets.
The central idea of this passage is that the cat is lazy and manipulative. She doesn't work, but her cunningness and cuteness allow her consistent privileges.