. Due Today at 11:59 PMCDT @Credit/ No Credit enabled. 85% Threshold Description
ID: 215745 • Letter: #
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. Due Today at 11:59 PMCDT @Credit/ No Credit enabled. 85% Threshold Description of Leukocyte Type of Leukocyte These phagocytes recognize and engulf pathogens in a nonspecific way. Differentiation into this cell type typically occurs as the precursor cell migrates toward the site of infection, after it has exited the capillary. These cells are relatively long-lived and can remain in body tissues to remove cellular debris (such as bone fragments or hemoglobin from damaged erythrocytes) cell of this type is pictured in this transmission electron micrograph of a thin slice of a mouse brain. Note the presence of two bacteria and of several lysosomes in the cytoplasm of this large cell The main function of this cell type is to secrete histamine, an inflammation-promoting chemical signal. The surface of these cells has receptors that bind the constant region of the IgE class of antibodies. Due to these antibodies, the cells are sensitized to certain antigens. A single cell of this cell type produces a surface receptor that is capable of recognizing a D very specific antigen. It divides and matures only if it encounters an infected body cell presenting that very antigen Differentiation into this cell type requires specific activation by helper T cells. This cell type is responsible for increase in speed and sensitivity during a second exposure to the same antigen. This cell type, activated in response to cytokines called interferons, identfies and destroys Tcytotoxic cell body cells lacking MHC proteins on their surface. A decrease in MHC protein synthesis is often a cellular symptom of a viral infection or cancerExplanation / Answer
Macrophages are phagocytes recognize and engulf pathogens in a nonspecific way. Differentiation into this cell type typically occurs as the precursor cell Monocytes migrates toward the site of infection, after it has exited the capillary. These cells are relatively long-lived and can remain in body tissues to remove cellular debris (such as bone fragments or hemoglobin from damaged erythrocytes).
A cell of this type is pictured in this transmission electron micrograph of a thin slice of a mouse brain. Note that the presence of two bacteria and of several lysosomes in the cytoplasm of this large cell.
The main function Basophils is to secrete histamine, an inflammation-promoting chemical signal. The surface of the cells has receptors that bind the constant region of the IgE class of antibodies. Due to these antibodies, the cells are sensitized to certain antigens.
A single cell of Lymphocytes produces a surface receptor that is capable to recognizing a very specific antigen. It divides and matures only if the encounters an infected body cell presenting that very antigen.
Differentiation into B cells requires specific activation by helper T cells. This cell type is responsible for increase in speed and sensitivity during a second exposure to the same antigen
T cells activated in response to cytokines called interferons, identifies and destroys body cells lacking MHC proteins on their surface. A decrease in MHC protein synthesis is often a cellular symptom of viral infection or cancer.
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