Search results
Results from the WOW.Com Content Network
These antigens are almost universally present on human red cells, but their absence has been noted in some individuals and some have been associated with transfusion reactions or other problems. Finding compatible units for transfusion to a patient that lacks one of these antigens is a major challenge and some countries maintain rare donor ...
Hemolytic comes from two words: "hema" (blood) and "lysis" (solution) or breaking down of red blood cells; Erythroblastosis refers to the making of immature red blood cells; Fetalis refers to the fetus. When the condition is caused by the Rh D antigen-antibody incompatibility, it is called Rh D Hemolytic disease of the newborn or Rh disease.
The Er blood group system consists of five human red blood cell surface antigens, Er a, Er b, Er3, Er4 and Er5. [1] The incidences of Er a and Er3 are each greater than 99% of the human population, while the incidence of Er b is less than 0.01%. [2] [3] Er4 and Er5 are found at a high frequency in the general population. [1]
Blood type (or blood group) is determined, in part, by the ABO blood group antigens present on red blood cells. A blood type (also known as a blood group) is a classification of blood, based on the presence and absence of antibodies and inherited antigenic substances on the surface of red blood cells (RBCs).
The ABO blood group system is used to denote the presence of one, both, or neither of the A and B antigens on erythrocytes (red blood cells). [1] For human blood transfusions , it is the most important of the 44 different blood type (or group) classification systems currently recognized by the International Society of Blood Transfusions (ISBT ...
Red blood cells (RBCs), referred to as erythrocytes (from Ancient Greek erythros 'red' and kytos 'hollow vessel', with -cyte translated as 'cell' in modern usage) in academia and medical publishing, also known as red cells, [1] erythroid cells, and rarely haematids, are the most common type of blood cell and the vertebrate's principal means of delivering oxygen (O 2) to the body tissues—via ...
The Duffy antigen is expressed in greater quantities on reticulocytes than on mature erythrocytes. [21] While the Duffy antigen is expressed on bone marrow erythroblasts and circulating erythrocytes it is also found on Purkinje cells of the cerebellum, [22] endothelial cells of thyroid capillaries, the post-capillary venules of some organs ...
The Ii antigen system is a human blood group system based upon a gene on chromosome 6 and consisting of the I antigen and the i antigen. [1] The I antigen is normally present on the cell membrane of red blood cells in all adults, while the i antigen is present in fetuses and newborns. [2]