Red blood cell the centre of 0.8–1 µm, being much smaller than most other human cells. These cells have an average volume of about 90 fL with a surface of about 136 μm, and can swell up to a sphere shape containing 150 fL, without membrane distension. Adult humans have roughly 20–30 trillion red blood cells at any given time, constituting approximately 70% of all cells by number. Women have about 4–5 million red blood cells per microliter (cubic millimeter) of blood and men about 5–6 million; people living at high altitudes with low oxygen tension will have more. Red blood cells are
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