Immunological Memory Accounts for ________

question 77

Multiple Choice

Immunological memory accounts for ________.

• A) the human body's ability to distinguish self from nonself
• B) the observation that some strains of the pathogen that causes dengue fever cause more severe disease than others
• C) the ability of a helper T cell to signal B cells via cytokines
• D) the ancient observation that someone who had recovered from the plague could safely care for those newly diseased
• E) the ability of the immune system to present antigen fragments in association with major histocompatibility (MHC) antigens

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Definitions:

National Saving

The total amount of saving in a country, equal to the sum of private and public saving, representing the national income not spent on consumption or government expenditure.

Public Saving

The portion of a government's budget surplus, which is the difference between tax revenues and government spending.

Private Saving

Private saving is the portion of households' and businesses' income that is not spent on consumption or taxes, typically saved for future investment or consumption.

Closed Economy

An economy that does not interact with other economies in the world