Blood
Blood is a fluid that circulates through animals. It consists of plasma, a liquid; and cells, including red blood cells, white blood cells, and platelets.
Wikipedia states, "Plasma, which constitutes 55% of blood fluid, is mostly water (92% by volume),[1] and contains dissipated proteins, glucose, mineral ions, hormones, carbon dioxide (plasma being the main medium for excretory product transportation), platelets and blood cells themselves."[1] This is inaccurate, because plasma by definition does not contain the blood cells. Otherwise it would be blood.