In positive selection of T-lymphocytes, those cells that
A. can bind MHC survive.
B. bind to MHC class II are eliminated.
C. bind self antigens are eliminated.
D. bind to self antigens survive.
Answer: A
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A. Acidic B. Neutral C. Concentrated D. Basic
The end of the aorta occurs when the vessel bifurcates into the
A. brachiocephalic artery. B. subclavian arteries. C. common carotid arteries. D. common iliac arteries.
Potassium, sodium, and chlorine are trace elements.
Answer the following statement true (T) or false (F)
Which of the following is not a function of the Golgi complex?
A. Synthesis of carbohydrates B. Addition of carbohydrates to certain proteins C. Packaging of proteins for export from the cell D. Synthesis of lysosomes E. DNA replication