T cells undergo immune selection FOR potential antigen-reactive cells and selection AGAINST those cells that react strongly with self-antigens
Indicate whether the statement is true or false.
Answer: TRUE
You might also like to view...
The dominant physical resources from the sea are:
a. magnesium and iron. b. salt and water. c. gold and copper. d. sulfides and manganese. e. gold and oxygen.
Which of the following is NOT a factor in
moving blood back to the heart?
a. systolic pressure b. smooth muscle contraction c. skeletal muscle contraction d. one-way valves in veins e. more than one of these is NOT a direct factor in moving blood back to the heart
Uses of chlorofluorocarbons include all of the following EXCEPT for ____
a. gasoline additives b. air conditioner coolants c. refrigeration coolants d. plastic packaging e. solvents
In the cell cycle, the G1 phase represents ____
a. the stage of DNA synthesis b. splitting of the chromosomes into chromatids c. a period of growth d. the stage of actual cell division e. the stage just prior to meiosis