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 a rare and delicate type of edible mushrooms that look like little potato nuggets. They grow in open woodlands in regions with a warm and moderate climate, on soil rich in calcium or limestone. Truffles are found under the ground at a depth of up to 30 cm under roots of elm or oak trees. These mushrooms are a food delicacy known for their rich taste. Some people describe it as musky and fiery, while others compare it to a blend of garlic and pungent cheese. They are very expensive and in great demand.