Human red cell antigens Human red cell antigens In addition to the defined human blood group systems, there are erythrocyte antigens which do not meet the definition of a blood group system. Most of these are either nearly universal in human blood or extremely rare and are rarely significant in a clinical setting. Reagents to test for these antigens are difficult to find and many cannot be purchased commercially. These three groups are antigens with shared characteristics but do not meet the International Society of Blood Transfusion (ISBT) definition of a human blood group system. Further research may identify them as blood group systems.
The Blood Cell 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 11 September 2014 along with "Silhouette" and "The Crawling Terror". "The Blood Cell" gained generally positive reviews, calling it an "effective chiller". Most of them commented the unusual way of narration from the first-person perspective of the administrator of the prison in which the book is set known as the Governor. More grim and darker tone is also noted.