AFRICANS Americans mate. A thanks would be appreciated.
Rejected children <span>are at the highest risk for poor school performance, substance abuse, and antisocial behavior in adolescence and delinquency with criminality in early adulthood.
A rejected child is someone who is left out by peers or family members. When a child feels and is being rejected, their performance in school and actives reflects that and it is often carried through adulthood. </span>
Answer: Tokyo was the largest city in the world in 2014
Answer:
The correct option is : <u>C. prevent the immune system from responding to self-antigens</u> and <u>D. prevent excessive response to foreign antigens </u>
Explanation:
<u>Immune tolerance</u>, also known as the immunotolerance, of the immune system, is a state of unresponsiveness to the cells or tissues that are capable of eliciting an immune response in an organism.
Tolerance is classified into <u>central and peripheral. </u>The central tolerance is induced in the thymus and bone marrow. Whereas, the peripheral tolerance is induced in the other tissues and the lymph nodes.
<u>Central tolerance of the immune system is responsible for discriminating the self cells from the non-self cells of the body and thus prevents the body from responding to self-antigens.</u>
<u>Peripheral tolerance of the immune system is responsible for preventing excessive response of the immune system to foreign antigens like allergens.</u>
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When it was finished, Baltimore and Ohio Railroad ran from Cumberland, Maryland to Parkersburg, West Virginia and was also extended to the Ohio River in Wheeling. The Baltimore and Ohio Railroad is one of the oldest railroads in the United States and the first ever common railroad.