Examlex
Compare and contrast the affinity hypothesis and altered peptide hypothesis to explain the thymic selection paradox (why we don't negatively select all cells that we positively select).
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The historical forced transportation of African peoples to the Americas to be sold and used as slaves, a central element of the Atlantic slave trade.
California Gold Rush
A period of rapid migration to California following the discovery of gold in 1848, significantly impacting the state's demographics and economy.
California Economy
The economic landscape of California, characterized by significant contributions from technology, agriculture, entertainment, and tourism sectors.
Farmlands
Areas of land used primarily for agricultural processes with the aim of producing food and other crops; it is the basic resource for farming.
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