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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.
Which cells phagocytize an antigen?
They are "phagocytes." Phagocytes include cells called neutrophils, monocytes, macrophages, dendritic cells, and mast cells. NEUTROPHILS - first line of defense mechanisms. MACROPHAGES - second line of defense mechanisms. Phagocytosis is a process by which macrophages (a type of white blood cells) engulf pathogens and cell debris.
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.
What group does the phagocytic antigen-presenting cell belong to?
monocyte-macrophage
What cell is not and antigen presenting cell?
Basophils is not Phagocytic
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.
Which cells phagocytize an antigen?
They are "phagocytes." Phagocytes include cells called neutrophils, monocytes, macrophages, dendritic cells, and mast cells. NEUTROPHILS - first line of defense mechanisms. MACROPHAGES - second line of defense mechanisms. Phagocytosis is a process by which macrophages (a type of white blood cells) engulf pathogens and cell debris.
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.
