Antigens on red blood cells (RBCs) are molecules that can trigger an immune response if they are recognized as foreign by the immune system. These antigens, such as the ABO and Rh systems, play a crucial role in blood transfusions and organ transplantation, as they determine blood compatibility. The presence or absence of specific antigens on RBCs helps the body identify its own cells versus invaders, ensuring proper immune function and response.
a
The red blood cell antigen named after the rhesus monkey is the Rh factor or Rh antigen. It is an important antigen in blood transfusions and plays a role in hemolytic diseases of the newborn when an Rh-negative mother carries an Rh-positive fetus.
Heterozygous in red cell antigen typing means that an individual possesses two different alleles for a specific blood group antigen on their red blood cells. This is in contrast to homozygous, where an individual carries two identical alleles for a particular blood group antigen.
A sensitized sheep red blood cell is a red blood cell that has been coated with antibodies specific for a particular antigen. These sensitized cells are commonly used in immunology tests like hemagglutination assays to detect the presence of specific antibodies or antigens in a sample.
The antibody is killed off, and the antigen spreads
It is the equivalent to Rh negative blood. D is the antigen present on commonly termed Rh+ red cells, and the D antigen is missing on D-negative blood.
The antigen contained in the red cell
The O antigen is not an antigen that may be found on the surface of an erythrocyte. A and B antigens are present in the ABO blood group system, while the Rh antigen is part of the Rh blood group system. O blood type individuals lack A and B antigens on their red blood cells.
Landsteiner's rule states that when an antigen is on a red blood cell, the corresponding antibody is never present simultaneously. Instead, the reciprocal red cell antigen is present in the plasma or serum.(Ex. A type A individual has anti-B in their serum.)
Type O NEG is the universal red cell donor AB POS is the universal red cell recipient Type O is the universal recipient for plasma AB is the universal donor for plasma Type O NEG is characterized by the lack of ABO and D antigen on the red cells. AB POS has every AB/D antigen present on the red cells. You may find some sort of commonality in there...although it's mostly opposites.
Antigen-presenting cells (APCs) primarily include dendritic cells, macrophages, and B cells, which play crucial roles in the immune response by processing and presenting antigens to T cells. Cells such as red blood cells (erythrocytes) are not considered APCs, as they lack the necessary machinery to present antigens to T cells. Therefore, any cell type that does not have the capability to process and present antigens would not be classified as an antigen-presenting cell.
Mammalian red blood cells do not contain a nucleus.