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Is a CD4 molecule also a type of antigen?
No, a CD4 molecule is not an antigen. CD4 is a protein found on the surface of helper T cells, a type of immune cell that plays a crucial role in the adaptive immune response by helping to coordinate immune responses. Antigens are molecules that can be recognized by the immune system, such as proteins on the surface of pathogens or foreign substances.
A marker molecule on a cell that the immune system uses to recognize a pathogen?
The major histocompatibility complex (MHC) molecules are marker molecules on cells that the immune system uses to recognize pathogens. MHC molecules present fragments of pathogens on the cell surface to alert immune cells to the presence of the pathogen. This helps the immune system to target and eliminate infected cells.
What is the molecule that can be recognized by the immune system?
Antigens.
How does the immune system respond to chemicals on the surface of an invading organism?
By presenting small pieces of the organism on their surface
How does chlamydia evade the host's immune system?
Sometimes chlamydia surface antigens change, and make it hard for the immune system to keep up. It also appears that chlamydia may release toxins that damage the immune response in some cases. (see related link).
What is foreign molecule?
A foreign molecule is a substance that is not naturally produced or recognized by the body. When foreign molecules enter the body, the immune system may identify them as threats and initiate an immune response to protect the body from potential harm.
What functional class of membrane proteins do the immune system detect?
The immune system detects antigens which can be proteins, lipids, or carbohydrates displayed on the surface of cells. In terms of membrane proteins, the immune system detects antigens presented by major histocompatibility complex (MHC) proteins on the surface of cells to distinguish between self and non-self molecules.
What is the molecule found on the outer surfaces of cells that the immune system recognizes as either part of the body or an outsides invader?
receptors
What system protects the body against infection?
your immune system and your White blood cells produce antibodies
Why is it when the immune system reject an transplant?
Immune system starts rejecting the organ of the recipient because the Human Leukocyte Antigen (HLA) which is present on the surface of the transplanted organ of the donor does not match with the recipient.
The male Japanese beetle detects and destroys the female pheromone molecule What tells the male protein to destroy the female pheromone molecule?
coded messages in the DNA
What two generas have members that can evade the human immune system by frequently changing their surface proteins?
Two genera that can evade the human immune system by frequently changing their surface proteins are Plasmodium, the genus that causes malaria, and Influenza virus. Both of these pathogens possess mechanisms to rapidly alter their surface proteins (antigens) in order to evade host immune responses.
