Which risk factor for stroke is manageable?
A. Age
B. Gender
C. Race
D. Family history
E. Diet
Answer: E
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T-cell activation requires antigen being displayed in the context of an APC and interaction between co-stimulatory molecules on the APC and the T cell
In addition to these two signals, T-cell activity is often influenced by cytokines. Which of the following is an example of how cytokines can influence T-cell activity in the presence of MHC presentation and co-stimulatory ligand interaction? A. CD28 causes memory NK cells to be produced. B. CD8 triggers apoptosis in T cells that recognize self-antigens. C. IL-2 triggers T-cell proliferation. D. Opsonins recruit eosinophils to present carbohydrate antibodies to naïve TC cells. E. TNF-? increases the production of IgM by activated T cells.
abortion : Termination of a(n) _______ by expulsion of the embryo or fetus from the uterus
Fill in the missing word in the definition for the key term.
The gastrocnemius muscle propels food through the stomach
Indicate whether the statement is true or false
All of the following are strategies for lowering cancer risk EXCEPT
A) not smoking. B) limiting alcohol consumption. C) checking for the presence of radon in the home. D) eating a variety of fresh fruits and vegetables.