rubensssss
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which of the following is true of cytokines?
A-Transforming groth factor-B enhances B cellproliferation and suppresses secretion of inflammation mediators
B-TNF-alpha is secreted by macrophages.
C-Interferon -B has antiviral activity and inhibits MHC Class 1 expression.
D-TNF-Bis secreted by bone marrow stromal cells.
E-TNF stimulate T cell proliferation
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Ruben sssss
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| rubensssss
Forum Guru
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What's up guy? is too easy or is too hard, come on .
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Ruben sssss
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| meg
Forum Guru
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B
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| rubensssss
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TNF possess many of the same activity as IL-1. TNF differs from IL-1 in that TNF are not able to stimulate T cell proliferation and IL-1 has only limited ability to lysis tumor cells.
TNF- alpha secreted by macrophages when estimulated by antigen.TNF- alpha is associated with production of hemorragic necrosis tumors.
--TNF Betha is produce by T cells and B cells. TNF betha is responsible for killing tumor cells and virally infected cells.
--Interferon Betha inhibits synthesis of viral protein by triggering the host cell to produce a second protein that interferes with the viral protein synthesis, Interferon Betha is primarily secreted by fibroblast and epithelial cells and enhances MHC class 1 expresion.
TGF- betha inhibits T and B cell proliferation. TGF-betha is chemotactic for monocytes and induces secretion of inflammatory mediators.
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| shaikh
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answer is E
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| rubensssss
Forum Guru
Topics: 95
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The answer is B
I give the explanation in my second E-mail.
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