What is an Ecosystem? An ecosystem includes all of the living things (plants, animals and organisms) in a given area, interacting with each other, and also with their non-living environments (weather, earth, sun, soil, climate, atmosphere). In an ecosystem, each organism has its own niche or role to play.
Pemphigus is a group of rare skin disorders that cause blisters and sores on the skin or mucous membranes, such as in the mouth or on the genitals. The two main types are pemphigus vulgaris and pemphigus foliaceus. Pemphigus vulgaris usually starts in your mouth.
Pemphigus vulgaris usually occurs in middle-aged patients, affecting men and women in equal numbers. Rarely, cases have been reported in children. One variant, paraneoplastic pemphigus, can occur in patients who have malignant or benign tumors, most commonly non-Hodgkin lymphoma. Pemphigus vulgaris is characterized by IgG autoantibodies directed against the Ca-dependent cadherins desmoglein 1 and desmoglein 3.