One Surprising Aspect of the Immune System Is That Individuals

question 44

Multiple Choice

One surprising aspect of the immune system is that individuals make responses to human tissues from a different individual, causing serious problems for organ and tissue transplantation. The basis for this immune response is:

• A) The extensive polymorphism of MHC genes in the human population
• B) The fact that transplanted tissues often carry infectious microbes into the recipient
• C) The fact that individuals may differ in their blood group antigens (i.e., their blood type)
• D) The presence of many antigen-presenting-cells in the transplanted tissue
• E) The presence of many B and T lymphocytes in the transplanted tissue

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Definitions:

Versailles Peace Conference

A meeting held in 1919 at the end of World War I, leading to the Treaty of Versailles, which imposed heavy penalties on Germany and sought to prevent future conflicts.

Woodrow Wilson

The 28th President of the United States (1913-1921), known for leading the country during World War I, advocating for the League of Nations, and implementing progressive domestic policies.

League of Nations

An international organization founded after World War I to promote world peace and cooperation, but was ultimately unable to prevent World War II, leading to its replacement by the United Nations.

Treaty of Versailles

The peace treaty that ended World War I, signed in 1919, which imposed heavy reparations and territorial losses on Germany, contributing to economic hardship and political instability in Germany.