0
Basophils is not Phagocytic
Wiki User
∙ 11y ago
Add your answer:
Earn +20 pts
Antigen presenting cell?
Antigen-presenting cells display foreign antigens on the cell surface with the hopes of T cells noticing recognizing these complexes. The cells that do this on a routine basis are called Professional APC's. This group consists of dendritic cells, macrophages, B-cells, and certain activated epithelial cells.
What is the clonal selection theory as it applies to B cells?
1. An antigen presenting cell presents antigen on Class II MHC to a Helper T cell activating it 2. At the same time a B cell that has taken up and degraded the same pathogen displays antigen on its class II 3. The activated helper T cell binds to the B cell releasing cytokines and activating it 4. The activated B cell proliferates and differentiates into: 1) memory B cells 2) antibody-secreting plasma cells that produce antibodies specific for the pathogen
What is the function of CD4?
CD4 is a surface receptor expressed by helper T lymphocytes, known as CD4+ T cells. Its purpose is to stablize the interaction between the T cell receptor (on the T cell) and an antigen-bearing MHC Class II molecule (on an antigen presenting cell). Under the right circumstances, this interaction activates CD4+ T cells that recognize an invading pathogen. Activated CD4+ T cells do many things, and are required for a robust adaptive immune response.
What is the blood cell protein that elicits an immune reaction?
Antigen
Antigens cause immature B cells to?
When a B cell detects an antigen, it will engulf it and then display it on its cell surface with an MHC molcule. This antigen/MHC combination is then detected by a T cell - which will send signalling molcules to B cells to multiply and mature into plasma cells (which create antibodies against the antigen) and memory B cells (which 'remember' the antigen for next time).They become plasma cells
Is T cell activation antigen specific?
Yes. The first signal that a T cell receives from an antigen presenting cell (dendritic cell) is MHC presenting an antigen (foreign peptide). This gives the T cell specificity to this antigen.
What does not serve as an antigen-presenting cell?
natural killer cells.
Which cell are presenting sea cell rhinitis?
There is no condition known as sea cell rhinitis, but there is seasonal rhinitis. One cell that is presenting in this condition is nasal mucosal antigen-presenting cell, or APC.
Which cell is known as antigen presenting cell?
Dendritic cells,macrophages, B cells
What group does the phagocytic antigen-presenting cell belong to?
monocyte-macrophage
The function of an antigen-presenting cell depends on the presence of what?
MHC proteins.
Antigen presenting cell?
Antigen-presenting cells display foreign antigens on the cell surface with the hopes of T cells noticing recognizing these complexes. The cells that do this on a routine basis are called Professional APC's. This group consists of dendritic cells, macrophages, B-cells, and certain activated epithelial cells.
What are the double signals in T cell activation?
T cells receive 3 signals during activation:1. Major Histocompatibility Complex (MHC) presenting an antigen (foreign peptide) to the T cell receptor2. The co-stimulatory signal (B7 on the dendritic cell binding to CD28 on the T cell)The first signal ensures that the T cell is specific for the antigen it has been presented.The T cell cannot be activated without also recieveing the second signal. This is how the T cell checks that it has been presented an antigen by a "professional" antigen presenting cell.3. Cytokines (signalling molecules) are released by the dendritic cell - these cause the differentiation of the T cell
The main antigen-presenting cells in the body are?
MACROPHAGES
What is the first signal required for activation of a T cell?
The first signal required to activate a T cell is MHC(Major Histocompatibility Complex) presenting an antigen(foreign peptide) to the T cell receptor.
What has the author Jonathan M Austyn written?
Jonathan M. Austyn has written: 'Principles of cellular and molecular immunology' -- subject(s): Cellular Immunity, Immunity, Molecular biology, Molecular immunology 'Antigen-presenting cells' -- subject(s): Antigen presenting cells, Antigen-Presenting Cells, Immunology
What does a naive b cell do?
It hangs around in a lymph node until an 'antigen-presenting cell' comes and finds it, and then it starts producing antibodies specifically to 'hunt down' or stick to whatever protein it is that the antigen-presenting cell shows to it. Once it starts producing antibodies, it's then known as a plasma cell. Antigen-presenting cell = phagocytic or 'pacman-like' macrophage or neutrophil that has eaten evil stuff and keeps a trophy of it's kill on its cell surface to wave around like a flag as it returns from the site of an infection back to base camp (AKA: lymph nodes). My apologies for all the battle references, but I imagine the immune system and its functions in a very graphic, very action-movie kind of way. It's just too cool and complex not to.
