Immune System The immune system is a network of cells, tissues, and organs that work together to protect the body from infection. Although scientists have learned much about the immune system, they continue to study how the body targets invading microbes, infected cells, and tumors while ignoring healthy tissues.mmune System The immune system is a network of cells, tissues, and organs that work together to protect the body from infection. Although scientists have learned much about the immune system, they continue to study how the body targets invading microbes, infected cells, and tumors while ignoring healthy tissues.
A truffle is the fruiting body of an underground mushroom. Its spores are dispersed by fungivores, animals that eat fungi.Almost all truffles are found in close association with trees. There are hundreds of species of truffles that are big, but the fruiting body of some (mostly in the genus 'Tuber') are highly prized as a food.The 18th-century French gastronome Brillat-Savarin called these truffles the diamond of the kitchen.here are hundreds of species of truffles that are big, but the fruiting body of some (mostly in the genus 'Tuber') are highly prized as a food. The 18th-century French gastronome Brillat-Savarin called these truffles the diamond of the kitchen.
truffle (plural truffles) 1  Any of various edible fungi, of the genus Tuber, that grow in the soil in southern Europe; the earthnut. 2  Abbreviation of chocolate truffle. (A creamy chocolate confection, in the form of a ball, covered with cocoa powder.)