antigen processing involves the breakdown of protein antigens and the subsequent association of peptide fragments on the surface of antigen-presenting cells with MHC class I or class II proteins.
Antigen is any foreign particle or molecule that can trigger a n immune response in the body.
After the body encounters the antigen cells like macrophages, B cells and dendritic cells will recognise and destroy them. The parts of the antigen will be presented by the macrophages to the T cells and hence they are also called Antigen presenting cells.
Antigen presenting cells will showcase the antigen or its part to the T cells. This is done with the help of a protein called major histocompatiblity complex or MHC complex proteins.
MHC proteins are present on cell surface and holds the antigens to showcase them to T cells.
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Answer:
Noncoding DNA does not provide instructions for making proteins. ... Such elements provide sites for specialized proteins (called transcription factors) to attach (bind) and either activate or repress the process by which the information from genes is turned into proteins (transcription).
Explanation:
All controlled experiments would have only one variable. If there were more than one variable the outcome of your experiment could be for multiple reasons and thus you would not be able to test whether your specific hypothesis was valid.
Answer:
A
Explanation:
DNA polymerase is responsible for adding to the bases of the structure.
