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What is an antigen made of?

An antigen may be made of either a bacteria or a virus. An antigen refers to a toxic or a foreign substance that once in the body attracts and is bound to a respective and specific antibody.


What is unresponsiveness?

Unresponsiveness refers to a lack of reaction or response to stimuli, which can occur in various contexts, such as medical, psychological, or social situations. In a medical context, it often indicates a reduced level of consciousness, where an individual does not respond to verbal commands or physical stimuli. In social situations, it can manifest as indifference or a failure to engage in communication. Overall, unresponsiveness can signify underlying issues requiring attention or intervention.


In Blood type O what does selectogen negative mean?

Selectogen negative in blood type O refers to the absence of a specific antigen called the Selectogen antigen. This antigen is part of the Rh blood group system. Individuals who are Selectogen negative do not have this antigen on their red blood cells, while those who are Selectogen positive do have it.


What is antigen challenge?

Antigen challenge refers to the process by which an immune system is exposed to a specific antigen, triggering an immune response. This exposure can occur through natural infection or vaccination, leading to the activation of immune cells and the production of antibodies. The purpose of antigen challenge is to prime the immune system, enabling it to respond more effectively to future encounters with the same pathogen. It plays a critical role in the development of immunity and long-term protection against diseases.


Does an antigen cause an allergic reaction?

Only if the person is already allergic to that antigen. Not if they are immune to the antigen. The word antigen refers to the protein that joins with the antibody. If the antibody is of the allergic type (IgE) then an allergic reaction will happen and if the antibody is of the immune type (IgG, IgM or IgA) then there won't be an allergic reaction.


What is the definition of sero status?

Sero-status refers to the term 'seroconversion' which is defined as the production of antibodies in response to an antigen. Sero-status can be either seropositive or seronegative; meaning either an individual tests positive or negative for the specific antibodies that are present after exposure to a specific antigen. Sero-status most often refers to HIV status and whether or not an individual is HIV+ or HIV-.


What does typhi h and o mean in widal test?

In a Widal test, "H" refers to the flagella antigen of Salmonella typhi while "O" refers to the somatic antigen of the bacteria. The presence of antibodies against these antigens indicates a recent or current infection with Salmonella typhi, the bacterium that causes typhoid fever.


What is the icd -9 code for community acquired pneumonia?

The ICD-9 code for community-acquired pneumonia is 481. This code specifically refers to pneumonia due to a specified organism, typically indicating a bacterial cause. For non-specific community-acquired pneumonia, the code 486 can also be used, which covers pneumonia without specifying the causative agent.


What is cost and value?

The cost requires a specific sum of money before it can be acquired. Value can be the monetary worth of something which is not necessarily the cost and, in addition, refers to quality, attitude, importance and usefulness. If you place a particular value on something, that refers to the importance or usefulness you think is has


What is the definition of connective or reactive activity?

In immunology, this refers to an antigen and an antibody combining. In chemistry, this refers to a molecule, atom, or radical having a chemical reaction with another molecule, atom, or compound.


What is meant by T cell priming?

T cell priming refers to the process by which naive T cells encounter antigen-presenting cells, receive signals, and become activated to mount an immune response against specific antigens. This activation is essential for T cells to differentiate into effector T cells capable of carrying out their immune functions.


What is acquired immuniy?

Acquired immunity refers to the immune response that develops after exposure to a specific pathogen or through vaccination. It involves the production of antibodies and memory cells that can recognize and fight off the pathogen upon future exposure, providing a faster and stronger defense against the same pathogen. This type of immunity is more specific and targeted compared to innate immunity.