The immune system is a system of many biological structures and processes within an organism that protects against disease.To function properly, an immune system must detect a wide variety of agents, known as pathogens, from viruses to parasitic worms, and distinguish them from the organism's own healthy tissue.isorders of the immune system can result in autoimmune diseases, inflammatory diseases and cancer. Immunodeficiency occurs when the immune system is less active than normal, resulting in recurring and life-threatening infections.
A truffle is the fruiting body of a subterranean Ascomycete fungus, predominantly one of the many species of the genus Tuber. Truffles are ectomycorrhizal fungi and are therefore usually found in close association with tree roots. Spore dispersal is accomplished through fungivores, animals that eat fungi.
Truffles are the fruiting bodies of ectomycorrhizal fungi which live on and around the roots of certain types of trees. Unlike other types of mushrooms which grow above ground and produce wind-dispersed spores, truffles fruit below ground, having evolved to produce strong chemical aromas when mature.o. Although there are many species of truffle only a small number are sought after for culinary use and have commercial value. These are Tuber magnatum Pico (Italian White), Tuber melanosporum Vitt. (Perigord black), Tuber borchii Vitt.(Bianchetto) and Tuber aestivum Vitt. (Burgundy or summer truffle).