Examlex
What is tolerance, and why must the adaptive immune system exhibit tolerance?
Tundra
A cold, treeless biome found in Arctic and Antarctic regions, characterized by permafrost, minimal vegetation, and short growing seasons.
Temperate Deciduous Forest
A biome located in the temperate zone characterized by trees that lose their leaves seasonally.
Mammal Species
Members of the class Mammalia, warm-blooded vertebrates characterized by the presence of mammary glands, which females use to feed their young.
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