Red blood cell (the remaining oxygen is carried dissolved in the blood plasma). The red blood cells of an average adult human male store collectively about 2.5 grams of iron, representing about 65% of the total iron contained in the body. Red blood cells in mammals "anucleate" when mature, meaning that they lack a cell nucleus. In comparison, the red blood cells of other vertebrates have nuclei; the only known exceptions are salamanders of the genus "Batrachoseps" and fish of the genus "Maurolicus". The elimination of the nucleus in vertebrate red blood cells has been offered as an explanation for the subsequent accumulation
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