Red blood cell thus much more common than the other blood particles: there are about 4,000–11,000 white blood cells and about 150,000–400,000 platelets per microliter. Human red blood cells take on average 60 seconds to complete one cycle of circulation. The blood's red color is due to the spectral properties of the hemic iron ions in hemoglobin. Each human red blood cell contains approximately 270 million of these hemoglobin molecules. Each hemoglobin molecule carries four heme groups; hemoglobin constitutes about a third of the total cell volume. Hemoglobin is responsible for the transport of more than 98% of the oxygen in the body
The Blood Cell characterisation perfectly". The audio addition to the book was released on 13 November 2014, read by Colin McFarlane who played General Austin Pierce in "" and guest starred in the "Doctor Who" episodes "Under the Lake" and "Before the Flood" as Moran. This was the first new series audio to be released since AudioGo went into administration in 2013. The Blood Cell The Blood Cell is a BBC Books original novel written by James Goss and based on the long-running British science fiction television series "Doctor Who". It features the Twelfth Doctor and Clara Oswald. The book was released on