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Which ABO phenotype selection contains the most H antigen and the least H antigen respectively on the red cell surface?
The ABO phenotype that contains the most H antigen on the red cell surface is the O phenotype, as individuals with this phenotype have the highest concentration of H antigen and lack A and B antigens. Conversely, the AB phenotype contains the least H antigen because it has both A and B antigens, which are produced by the modification of H antigen, resulting in a lower amount of unmodified H antigen on the surface.
What else can I help you with?
Which genotype will give rise to the Bombay phenotype?
The Bombay phenotype is caused by a homozygous recessive mutation in the FUT1 gene, which results in the absence of H antigen on red blood cells. Therefore, the genotype for the Bombay phenotype is hh.
What type contains neither antigen a and b?
O
What is a monovalent antigen?
A monovalent antigen is a type of antigen that contains only one type of epitope, which is the specific molecular structure that can be recognized by the immune system. This means that the antigen can only trigger a response from one type of antibody.
What area is antigen challenge and clonal selection most likely to occur?
Antigen challenge and clonal selection are most likely to occur in the secondary lymphoid organs, such as the lymph nodes and spleen. These organs are where antigens encounter immune cells, triggering an immune response and the selection of specific immune cell clones.
What nonlymphocyte cell is a central actor in clonal selection?
Antigen-presenting cells (APCs) are nonlymphocyte cells that play a central role in clonal selection. They present antigens to T cells, triggering the immune response and selection of specific clones of T cells that can recognize and respond to the antigen.
What happens if your HIV sample contains the disease antigen?
whats the treatment for hiv/aids?
What is false of the following statements about the clonal-selection theory of immune system function?
The clonal-selection theory posits that each lymphocyte expresses a specific receptor for a particular antigen, and upon encountering its specific antigen, it proliferates and differentiates into effector cells. A false statement about this theory might be that all lymphocytes can recognize and respond to any antigen, as the theory emphasizes that only those with the matching receptor are activated. Furthermore, it does not suggest that immune memory is formed solely from the initial response, as memory cells are also generated during the clonal selection process for future encounters with the same antigen.
Why is the IB allele dominant to the i allele?
The IB allele is considered dominant to the i allele because it produces a functional enzyme that adds the B antigen to the surface of red blood cells, while the i allele does not produce any antigen. This means that when both alleles are present (IBi), the B antigen is expressed, resulting in the phenotype associated with the IB allele. In contrast, the presence of the i allele does not affect the expression of the B antigen, making IB phenotypically dominant.
What is clonal selection responsible for?
Clonal selection is responsible for the production of a large population of identical B or T cells that specifically recognize and target a particular antigen. This process is critical for the adaptive immune system's ability to mount a targeted immune response against pathogens.
Is B a human blood phenotype?
No, B is a blood type representing the presence of the B antigen on red blood cells. It is one of the ABO blood group system classifications.
Blood type that contains A agglutinogens?
Type A, is this from the Blood Basics Quiz? I hate that thing.
Alloreactivity is a positive selection step or negative selection step?
Neither. Alloreactivity has to do with a lymphocytes reacting to a foreign antigen. Positive and negative selection are processes of central tolerance which is to say that they deal with a T cell's ability to bind self-antigen.
